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CIRCLE CARD 239

SOME OF OUR CONTRIBUTORS KEft.l·) 'Ij i(.) ~ ~1 Concurrent Engineering for the 90's Ronald G. Stokes is Director of Engineering at P.O. Box 11978, Spokane, WA 99211-1978 CreativePen Systems, a marketing and engineer­ Ph: 509/928-5169 Fax: 509/928-4937 ing design firm in the portable pen based communi­ EDITORIAL cator market. He owns RGS Designs, a contract Managing Editor engineering service company. Ron has a Mechani­ Claudia Martin callIndustrial Engineering degree from Cal Poly, Technical Editor San Luis Obispo, Ca., and has been a manufactur­ Dr. Robert Martin ing and design engineer for 12 years. He is very involved in the rapid prototyping industry. Senior Editor Jack Bilderback, CPIM

Cadkey / KEYSOLUTIONS Relations Charles Taylor, an anthropologist, presently op­ Frank Simpson, Manager erates a rural TeleCenter and is Director of the CONTRffiUTING EDITORS Omnilink Computer Training Center in northeast Charles Kyle, Ron Shea, Frank Simpson, Washington state. Formerly director of the Big Is­ Craig Storms, Martin van der Roest land Computer Center and Parker High School computer training program in Hawaii, he now as­ DESIGN CADI Art Director sists Selkirk School District in implementing Melissa Clark CAM/CAE training into the high school vocational education curriculum. PRODUCTION Production Manager Gayle Simpson Stas Mylek is the Product Manager for the CADKEY product line at ADMINISTRATION Cadkey, Inc. He has over 12 years of CAD experience and has been with Business Manager/CEO Cadkey for 7 years in positions such as Applications Engineer, Manager Steve Radford of Application Engineering and Technical Services, and as a Regional Sales Manager. As the Product Manager, he is responsible for the Administrative Assistant specification, management, and future direction ofthe CADKEY prod­ Cathy Bilderback uct line. ADVERTISING SALES WESTERN REGION - Jamie Bohn Ph: 415/572-9011 Fx: 415/572-9969

MIDWEST REGION - Ed Krukowski Ph: 708/806-1600 Fx: 708/806-1604

EASTERN REGION - John Camuso, Jr. Ph: 617/769-8950 Fx: 617/769-8982

EDITORIALPOUCY: KEVSoLUTlONS is an independent publication without obligation to any software or hardware dealer, vendor or distributor, except as indicated. Articles noted as news or features are written without knowledgeable bias. Articles noted as editorial represent the opinion of the author. Technical articles represent the opinion of the author and are selected by virtue of their educatjonal value.

SUBSCRIPTION CORRESPONDENCE: (orders, change of address, etc.) should be directed to KEv SOLUTIONS, P.O. Box 11978, Spokane, WA 99211·1978. Allow six weeks for processing.

EDITORIAL CORRESPONDENCE should be di· rected to Managing Editor, KEVSOLUTIONS, P.O. Box 11978, Spokane, WA 99211·1978. KEVSOLUTIONS en· courages readers to submit articles, letters, questions and technical tips.

KEVSOLU'f1 0NS, Copyright © 1993,(ISSN 1064-2145);. published bi·monthly by Value Engineering Associ· ates. Application to Mail at Second-Class Postage Rates is Pending at Spokane, W A. Microsoft and Windows are registered trademarks of Microsoft Cor­ poration. IBM is the registered trademark of the International Business Mach ines Corporation. CADKEY is the registered trademark ofCadkey, Inc. AutoCAD and DFX are registered trademarks of , Inc.

4 • KEY Solutions • June I July 1993 JUNE / JULY 1993 Vol. 2, NO. 3

CONCURRENT CADKEY® DRAFTER by Frank Simpson 10 ENGINEERING Breaks price / performance barrier

SOLUTIONS Rapid Prototyping Tec hnologies by Ron Stokes 16 An overview of newer tools

Rap id Prototyp ing with FastSU RF by Claudia Martin 18 A state-of-the-art phone from design to product

Speed : The Rea l Benc hmark by Jack Bilderback 20 Decreasing time -to-market - concepts and techniques

CADKEY® ADVANCED MODELER by Stas Mylek & 24 Frank Simpson

Case Study by Martin van der Roest 44 Downsizing and implementing a document management system

Concurrent Eng ineering Workshop - Part 3 by Craig Storms 48 & Ken Fortier Redesigning a part using stress analysis

ISSUES S.O.S. - Save Our Sc hools by Charles Taylor 36 At th e End of Th is Lesson by Ron Shea 38

PRO DU C T Mice and RSI by Claudia Martin 30 F 0 C U S Minimizing the risk

Ergonomic Mice & Kin by Claudia Martin 32

ReVIEWPORT 42 A brief look at hardware and software

Capture This ... by Ron Shea 54 Viewing software for CADKEY

COLUMNS KeyTalk 7 AND KeyNotes 8 DEPARTMENTS Cad key Forum 11 New Prod ucts 13 CADL Toolbox 56 CAD KEY Co rner 64 Advertiser Index 66 Solution Mart 68 KeyMail/ User Group 70 - Intel 486 CPU with Integrated Math Coprocessor - 17" FST Color Monitor 1280x1024 NI .26dp - Intel Pentium Overdrive Socket Upgrade - VESA L-BUS Orchid P9000 3Mb w/Weitek - 32 Bit VESA LOCAL BUS + 32 Bit EISA Mboard Graphic Processor, 1280x1024NI, 76Hz, 24Bit - 8MB High Speed 32Bit RAM (exp. to 128MB) - Panacea Turbo Display List Drivers - 32 Bit VESA L-BUS Hard Disk Controller - 101 Key High Tactile Quality Keyboard - 240MB 14ms Cached Hard Disk Drive - Microsoft-DOS 5.0 with 3 Button Mouse - 3.5" & 5.25" HD. Floppy Disks, 2S/1P ports - Xi Desktop / Deskside Case with Double Fan

CALL TOLL FREE IN CA: (714) 498-0858 USA & CANADA 1-800-432-0486 FAX: (714) 492-6571 International: (714) 498-1926 Warranty: XI On-Site: one year parts, labor and free Sweden: +46-660-55900 replacement parts shipping. 30 day money back SWitzerland: +41-91-56 1578 guarantee. Life Umetoll-freetechnlcal support. Same Italy: +39-131 -81 5334 day express shipping service from stock. · 980 Calle Negocio, e omput et:IRCLEe CAR~J·pora tIon SanClemente,CA92673 • Aa reviewdd "CAD..,.". May 1982. M8y 1993, AulOced R11 IR t 2 indexes. AI prien and t.peCiIk:dons sub;ed ID chang..... out nOlice. Prices do ROI itdude shipping. For rT'IOf8 .,fonnlCion on Xi products .. services CII. Of Wlilie lo XI Computer. ~re In ...e above acreen.: AuloC8d11 by AulOdesk -.C ... l.6crostation " .0 1 by mergraph Corp. hav.to be pun::heaed .....I et>;' . Xi is nOl responatlte 101" phoIogt1lphiclll .. typographiclll entlf'1" Xi, the Xi logo, Work$la~er and Netaerverere n dematlla .. reg .....d emark. of XI Computer Corp. Xi450 I Xi468 Workstelion... correspond 10 Xi Pt1II : Xi488I5OW IXi486133W. lnlel, i486. Pentalmlnd the Inlelln .... Logo .re registered lrademarks oIln l ~ Corporebon. IU OCher trademark. at their rupedHe comp.nte,. Copyright (c) 1993 Xi Computer COf'pOIlItion AI Rights reaerved . AWYSIWYG KEY TALK RENDERING

I haven't been on my soap box regarding education for a while now, but some alarming things are happening in Washington state that have spurred me to share my concerns. The problems in Washington are about money and here' s the story. The state constitution mandates that all students (K through 12) shall receive equal state funds , presumably so they can have an equal education. But somehow, some way, someone has been able to undermine this mandate. Reports from the Department of c~\)~t'( \\0'" il\\\loll.'t.\)\. li\II" Education and individual school districts show that for 1992/93 and 1994, \\lIa\it6 c:,o\i\\' C educational funds are being disbursed unequally with schools in urban REALIZE rendering tool (ll> is the first di stricts receiving more dollars per student than those in rural di stricts. rendering tool available under DOS The difference ranges from over $1200 per student in urban di stricts to offering true What You See Is What You $247 in the poorest rural districts. Get control over the rendering process. Sounds too easy, but its true . And REALIZE has "virtual reality" viewing to This is significant and is causing rural di stricts to cut their already allow realistic walk meager budgets to the quick. For example, in Eastern Washington, the throughs . Superintendent and the two-person office staff of one district volunteered Finally there is an to go on half-pay to avoid laying off a teacher. In addition to being affordable full unconstitutional, this unequal disbursement of fu nds is entirely unfair and featured animation undemocratic. The real problem is that if allowed to continue, it will and rendering adversely affect the education of a significant portion of our young people. package. Producing a spin movie of a design "G~ t Why am I sharing this in KEy SOLUTIONS? This is, after all, a CAD object is incredibly easy ~\ 0\\ S\3\\\\3 \\ magazine and engineers, designers and manufacturers are really busy and intuitive. r.: with the world's work. Besides, your state may not have this predicament. **Features** If you think these problems do not relate to you, think again. First, competition for funds in the shrinking coffers of any state is fierce. • Movies and renderings at resolutions up to 1280 x 1024 - 256 colors Financial shenanigans and chicanery are a potential anywhere. Second, • FAST rendering and ANIMATION! the future health of our profession, businesses and national economy • Renders any model size in standard depends on the cornerstone of education. It' s where our new engineers, 640K RAM on Standard or Super VGA • Icon driven with on-line help draftsmen, technicians and computer experts get their start -- and they • Dynamic wire frame display need a good one. If they don't, we will all be hurt for decades to come. • Phong , flat and gradient shading with textures • Dynamic color image editing • Imports CAD files directly: CADKEY iII My actual opinion is that government has no place in education. This Solids, CDL, STL, and all 2-1 /2 and 3-D DXF N slow moving legislative body has proven to be -- at times -- corrupt, self­ entities. serving and fraught with influence peddling. There is no room for thi s in • Key frame driven animation • Built-in and DOS level animation player and builder education. I am realist enough to know that this involvement is likely to • Bi-directional interactive mouse driven animations continue for the foreseeable future. • Full featured movie scripting language: combine multiple animations with thousands of frames into In the meantime, we don't dare li ve in an ivory tower. We mu st be a single run movie .Special movie effects: fades, pauses. looping. informed and involved. Support and vote for candidates that support and mouse interaction education -- especiall y vocational education. Write to your state and VAR. dealer. & distributor inquiries welcome federal officials on educational issues, and find out what you can do to be VISA , MasterCard accepted involved. Av/[ f/// (J) C-'/ Robert Martin Technical Editor C 1992 lunar GfaphiCs , Inc. Rulize Renderino Tool is a lrademart: of lunar Graphics,lnc. All other trademarks and copyrights acknowledged . Made in the U.S.A CIRCLE CARD 235

Jun_ I July 1993 • KEY Solutions • 7 WINDOWS Brings Hidden Costs CADKEV in the News A Microcomputer Manager Association study of 402 corporate MIS managers in sole-proprietor to Fortune 500 companies reveals higher On the Road Again than expected costs for upgrading to Windows. The study concludes that Top Cadkey management and technical the expense for a onetime conversion to Windows averages $3,286 per staff conducted a series of two-day dealer seat including hardware, software, training and service. This figure does meetings, product training sessions and not include internal development or ongoing support costs. The study, user meetings nationwide during May released at the Windows Summit in Carlsbad, Ca., further states that and June. Cities included in the tour were survey respondents said they expect to increase their technical and Raleigh, N.C.; Toronto, Ontario; Irvine, training staffs in order to handle a change to Windows. CA;Ypsiianti, MI; Seattle, WA; Dallas, Respondents, however, noted a perceived increase in productivity. TX; Windsor, CT; and Baltimore, MD. Some 59% ofthose surveyed considered GUIs a strategic platform. Fifty­ Dealers received hands-on training in the two percent of those who moved from DOS to Windows said their new features in CADKEY6. The Advanced productivity increased, and roughly 60% said moving from DOS or Modeler, which is being released as this Windows to OS/2 made them more productive. Survey participants said goes to press, FastSURF, Surf Mill and the greatest productivity gains were made by moving from DOS to . the new Varimetrix products were also The study also finds that usage ofOS/2 2.0 was expected to increase over demonstrated. the next 12 months. The highlight of the user meetings was Microsoft Doesn't Always Win the opportunity to meet Cad key technical The United States Patent & Trademark Office rejected a bid by personnel (development and tech sup­ Microsoft to trademark the word Windows. This victory for software de­ port) face to face, ask questions and velopers who say Microsoft Corp. has unfairly controlled the Windows receive one-on-one demonstrations. The trade name has not gone unchallenged. Microsoft will appeal the ruling meetings were well attended by 100 to and try to persuade the Patent Office that Windows is not a generic word. 200 users in each of the cities visited. Microsoft's justification is that it offers vendors the right to add the In Seattle, Charlie Ferrucci,V.P. Market­ phrase "for Windows" to their software names. ing, emphasized the company's desire to provide superior technical support and to Pentium Alternative be responsive to the requests and de­ Mips Technologies offers the Mips R4000 and the Mips R4400 high­ sires of Cad key users. He stated, "Ver­ performance processors which are competitively priced with Intel's sion 7 is on the drawing board and we are about-to-be-released Pentium chip. Silicon Graphics, Mips' parent com­ looking for as much user input on needed pany, claims that the R4000 is twice as fast as Intel's 50MHz 80486 enhancements as we can get. Be sure to microprocessor and the R4400 is twice as fast as a 66MHz Pentium write, fax, send a message through the microprocessor. SGI has signed Acer, NEC, Olivetti, Toshiba, Siemens BBS or call." and other PC makers to begin production of NT-capable Mips machines for less than $5,000. CADKEY 1993 Resource Guide The 1993 Cad key Resource Guide will New UNIX Unification Plan be published by KEYSOLUTIONS maga­ In a new attempt to satisfy customer demand for consistent technolo­ zine in late summer 1993 and replace the gies across multiple platforms and provide greater technology choices, previous Cad key Applications Guide. This several UNIX system companies have announced their intention to publication will include detailed informa­ deliver a common open software environment (COSE) across their UNIX® tion on third party application software, system platforms. Although previous attempts such as OSF and the ACE compatible hardware and peripherals, initiative have fallen markedly short of expectations, Hewlett-Packard complete listings of User Groups, autho­ Company, IBM Corp., The Santa Cruz Operation, Inc., Sun Microsystems, rized training centers and learning mate­ Inc., Univel and UNIX System Laboratories, Inc. are again attempting to rials, and general information about establish uniform standards for UNIX. They have defined specifications CADKEY, DataCAD and Varimetrix. The for a common desktop environment and a consistent set of programming 1993 Resource Guide will be distributed interfaces for developers for the HP, IBM, SCO, SunSoft, Univel and USL to registered users and inserted in every platforms. In addition, they have endorsed specifications, standards and Cad key product package. technologies in the areas of graphics, multimedia and object technology, New Cadkey Staff and have announced a working group in the area of systems administra­ Dick Kretzmer, Vice President of Sales, tion.

(continued on next page)

8' KEY Solutions' June I July 1993 The common desktop environment will incorporate aspects of HP's Visual User Environment (VUE), IBM's Common User Access model and , OSF's tool kit and Window Manager, SunSofts's CADKEV in the News

OPEN LOOK® and DeskSet productivity tools, and USL's UNIX SVR4.2 recently announced the appointment of desktop manager components and scalable systems technologies. several additions to the sales and mar­ The companies plan to publish a preliminary specification by the end of keting team. June 1993 and will periodically release updates to the industry. They have agreed to submit the specification to XlOpen for incorporation into the XI Andy Hidalgo has become Cadkey's Di­ Open portability guide. HP, IBM, Sun and USL will make an implementa­ rector of Major Account Sales. Andy tion for the common desktop based on XlOpen specifications available in the brings to Cadkey extensive experience first half of 1994. This implementation will be openly licensable to the in CAD/CAM with emphasis on large industry. The six companies will host a Developers Conference in early corporate accounts worldwide. He has October to give users and software developers details on products and worked with Schiumberger/APPLICON, direction. General Electric/CALMA, SIGMA Design and THEMATIC SYSTEMS. Andy has Noticeably absent from the list of involved companies is Silicon Graphics, direct responsibility for Cad key's major a major UNIX supplier to many CADKEY users. Jim Barton, Vice Presi­ account program, regional managers, dentJ Advanced Technology at Silicon Graphics, discussed some issues and all field sales activities in the United related to these developments with KEySOLUTIONS. According to Barton, States and Canada. this attempt may succeed because it is scaled back from previous plans, but he does not expect to see any major progress immediately, and probably not Tony Mazzagatti has joined Cadkey as for several years. "In the meantime," said Barton, "Silicon Graphics will not the Director of North American sales. He sit around and wait. We will continue to provide our own advanced ease-of­ has many years of experience in the use technology and the standard XIIR5 and Motif® 1.2 interfaces to our CAD/CAM industry ,most recently with customers. When and if the standard is a reality, we will be able to fit in Autodesk. easily by integrating a COSE implementation from any ofthe suppliers into Bill Ross is Cadkey's new Southeast our value-added user interface environment." Regional Manager. He will focus on Ma­ Market Research from ITA jor Account activities, taking advantage of his CAD/CAM sales experience. The International Trade Commission (ITA) has published the U.S. Industrial Outlook for 1993, an annual survey which examines key indus­ Multiple Platforms for 6 tries and predicts growth rates for the coming year. The 650-page 1993 CADKEY 6 operates on various plat­ report provides detailed analyses of350 occupations in both manufacturing forms including OS/2, popular UNIX sys­ and services. Among this year's fastest growing manufacturing trades will tems, 386/486 DOS, and can run as a full be computers, peripherals, software, and durable goods. Some of the best screen DOS application under Microsoft service industries will be electronic information, data processing, and WINDOWSTM . CADKEY Corner in this health-based. issue gives detailed instructions on how For the first time, the U.S. Industrial Outlook is available on CD-ROM to run Version 6 under WINDOWS. ($35) as part of a collection called the National Trade Data Bank. The 800 Number for Canada information is also on 3.5- and 5.25-inch floppy disks for $135. The book Cadkey, Inc.'s tOil-free telephone num­ version is $37. To order, call the Department of Commerce 202/482-1986 or ber 800/394-2231 is now working in write to the Superintendent of Documents, P.O. Box 371954, Pittsburgh, Canada. PA 15250-7954. CADKEY 6 Training Materials BBS Services Under Attack Training manuals for CADKEY 6 are The Software Publishers Association and the FBI plan to continue available for end users, dealers, training aggressive attack raids on commercial bulletin board services who illegally centers, and schools from Cadkey, Inc. distribute copyrighted software. On January 30,1993, the FBI raided Rusty An introductory set covers 2D and 3D & Edie's BBS in Boardman, Ohio. Following a sting operation instigated by design and drafting in student workbook SPA member complaints, FBI officials seized computers, hard disk drives, format. Advanced manuals cover more telecommunications equipment, and financial and subscription records. sophisticated techniques. These manu­ For an annual fee of$89, subscribers could download popular business and als augment CADKEY 6's on-line com­ entertainment programs without having to pay a copyright fee. Similar puter-based tutorial (CTB) which offers raids on other boards are expected shortly. [3 brief lessons to help reduce learning curves.

June I July 1993 • KEY Solutions' 9 ®

Breaks Price / Performance Barrier CADKEY®DRAFTER • AT A GLANCE by Frank Simpson • One-Third the Cost of Competitive CAD Packages • Comprehensive Drafting Standards Support

CADKEY®DRAFTER is a new One-Third the Cost o Dialog Boxes, Windows-like GUI product targeted at mechanical "The new DRAFTER product o DWG/DXF File Translator designers and engineers who need will be priced at only $995 in the low-cost drafting tools. United States," stated Malcolm o Co-existence in Mixed CAD Environment Davies, Cadkey president. "This

sets a new price/performance standard in the CAD industry," declared Davies. "Price has been a IF A LITTLE limiting factor in the wide accep­ tance of CAD software. This full­ featured drafting package for under KNOWLEDGE GOES $1,000 breaks the price barrier and provides a professional, mechanical A LONG WAY, IMAGINE drafting-and-design system that is less than one third the cost of WHAT YOU COULD DO higher-priced CAD systems." Encouraging CAD Co-existence CADKEY DRAFTER has fully AFTER A CADKEY integrated DWG and DXF®transla­ tors that let users easily import and TRAINING SEMINAR. export files and encourages co­ existence with other CAD software, Now you have six ways to accelerate your Cadkey learning curve. for example, AutoCAD®. "The • Training offered at Cadkey, Inc. corporate headquarters. Courses include: DRAFTER's full binary capability provides a low-cost alternative for 6 Introduction to CADKEY® 6 Sys tem Customization (CADL®& CDE) existing AutoCAD users who need 6 Advanced Geometric Model ing 6 Introduction to CADKEY® C to add more seats," stated Davies. 6 Introduction to FastSURP M 6 Introduction to DataCA O® "The DRAFTER also can use the • Training with your local dealer/value-added reseller CADKEY IGES Translator which • On-site training at your faci lity. Call for details. provides exceptional configuration • Training at Cadkey Training Centers capabilities and full compatibility • CADKEY includes CADKEY®T UTOR, a self- running computer-based tutorial. with other CAD systems." • Training materials are ava ilable for CADKEY and DataCAD. Drafting Standards Support CAD KEY DRAFTER provides Cadkey, Inc. 4 Griffin Road North, Windsor, CT 06095-151 1 complete support for ANSI, ISO, (203) 298-8888 0 Toll Free (800) 394- 2231 CADKEV DIN and JIS drafting standards. It r------, also features a robust set of auto­ For information, check appropriate box(es ) and FAX to Cadkey Training at (203) 298-6484. matic dimensioning features to o A complete schedule of classes held at Cadkey, Inc. 0 Dealer training in my area produce accurate professional drawings and a complete set of o Train ing at my fac ility 0 Cadkey training materials 0 Cadkey Training Centers functions for creating, editing and Name ______Title ______transforming geometry with mul­ CompanyName ______tiple viewports. Dimension associa­ tivity eliminates costly design Address ______errors because changes made to the City______S tate/ZIP ______geometry, in any view, create an automatic update in the detail Phone FAX ______drawing. CADKEY and DataCAD are registered trndemaoo oICadkey, Inc. CADI., CDE, CADKEY C, FastSURFand CADKEYnrrO Rare trademarks of Cad key, Inc.

CIRCLE CARD 254 10 • KEY Solutions' June I July 1993 CADKEY DRAFTER includes advanced drafting features, such as geometric tolerancing and dimen­ sioning, dual dimensions, general­ Cadkey Forum dimensioning symbols, welding symbols, center lines, section lines, balloon notes and libraries of 2-D Developing a Winning Strategy patterns (electrical, fluid-power, by Malcolm Davies, President - Cadkey, Inc. logic, piping, sheet-metal and flow­ chart symbols). The DRAFTER's With the launch of CADKEY®6, intelligent cursor adds to its ease of CADKEY® DRAFTER and CADKEY® AD­ use and increases productivity. VANCED MODELER , I believe that GUI Increases Productivity Cad key has begun a process that will "Engineers designed CADKEY change the face of the CAD industry DRAFTER for engineers; so ease of and open the door to the next genera­ use was of paramount importance," tion of PC-based CAD. said Davies. "Our research shows Our two latest products, DRAFTER that it would take only half-a-work and ADVANCED MODELER, are unprec­ day for an engineer to switch from a edented in price and performance. competitive system and become Each sells for $995 in the United States. productive with the DRAFTER." The DRAFTER is a true breakthrough, The DRAFTER's graphical user smashing the $1 ,000 price barrier for interface (GUI) simplifies many professional CAD. The ADVANCED operations. Windows-like dialog MODELER Is also an industry first, intro­ boxes consolidate multiple ducing integrated NURB5-based mod­ selections into a one-step operation. DRAFTER's immediate-mode eling that combines wireframe, surfaces feature places the most frequently and solids on a PC platform. used commands only one keystroke Today, Cad key delivers solutions away. On-line Hypertext help that span the complete range of PC­ provides inst ant answers. based concurrent engineering needs. DRAFTER's GUI seamlessly It's quite a line-up, leading off with patible with CAD KEY 6, and can import incorporates file management, CADKEY® LIGHT at $99, followed by the files created with earlier versions of printing and plotting. A dialog box DRAFTER for low-cost professional draft­ CADKEY. Further, the DRAFTER's fully in­ furnishes access to powerful cross­ ing and our power hitter, CADKEY 6, the tegrated DWG and DXF® translators let hatching functions, and Quick 3-D mechanical CAD system that has users easily import and export files from, Hatch lets users cross-hatch with a won awards, quite literally, around the for example, AutoCAD® applications. single cursor selection. C3 world. CADKEY®6 is also the foundation Our IGES translator also gives DRAFTER for the ADVANCED MODELER. Another full data compatibility with other CAD major player is our 3-axis machining systems. product, CADKEY® NC. Our customers told us that a prod­ Our strategy of fielding a full team is uct like ADVANCED MODELER should • CAD KEY DRAFTER Is fully compatible significant because I am convinced have an intuitive, easy-to-Iearn-and-use with the entire CAD KEY product line. that customers want to buy integrated interface, with a "windows"-like envi­ systems from a single vendor. And, it's ronment and a single data structure. • CAD KEY DRAFTER operates on 386/486 very clear that low-cost CAD products CAD software, designed correctly, can DOS platforms, and can run as a full­ designed for PC platforms, with robust make a major contribution toward screen DOS application under Microsoft features and high price/performance compressing the time it takes a com­ Windows and OS/2. ratiOS, are what users require now and pany to bring a product to market. in the future. We are delivering on I believe that Cadkey has the right • CAD KEY DRAFTER is available through Cadkey's commitment to become the products at the right time, understands authorized dealers or directly from producer of the lowest-cost software in the dynamics of this marketplace, and Cadkey,lnc. the engineering marketplace. has the ability to adapt rapidly to A major component of Cad key's changing environments. The DRAFTER product strategy is encouraging co­ and the ADVANCED MODELER are clear existence. Reality in the workplace is signals that Cadkey is taking the nec­ Editor's note: AutoCAD and DXF are registered very frequently a mixed-CAD environ­ essary steps to become the vendor of trademarks of Autodesk, Inc. , Sausalito, Ca. ment. CAD KEY DRAFTER is binary com- choice among design professionals.

June I July 1993 • KEY Solutions· 11 · cA)\lM~~ ..·Aff~rdahi~ ·.D·e ·skt<>~·. :l\tmrif~turing.; . ~p 'u~ta :~o~, th~ o'~~~t r~ge ~f ~n ' ". " .. engineet'.s . d~s~top 'his pre~ i:n~ch bee'n ~ite 'd t~ Xand "I:.: tW~-dimerisional llnages 9£ three~dime~s~onal ' .. : objects. Well, w~: dlike t~ op'en'up your d~sktop ,by-adding a i Cl]cis. .... : .' ...... : ...... ' . . . ' 'CA,MM-3.br'mgs 'rapid protot.YIJirrg o.n.to the engineer;s <;I.e·shop, wh~re 'it really 9eloiigs. · D~sig~ed like a tliree- , . dimensIonal plott~r ; ' it mills ~:Xac~ ' p;ot!1types 'vell netWork. Work. With ' your favorite Mac~fos. hCAD/CAM pr~graIl).s ; In fact;- with.tlie addition of ouradvah~ed .' " G:-: Code driver, the fulUisf of .co~pati]jle software is ahnost endless'. Jrtciu~ed ~th 'the : . C~.-3 . is' BaS~c 'CAD/CAM Tuto ri~t Softwa~e, a JulHean,lr~ ci ' packagetllat gui.des . .y ou throug~ 3i)'op~ ratiorissuch as, surfaci~g , pockE1ting .: o f'fs~t routines, arid automatic ' .toolpat~ g~nerati~n. A£forda~l~ rapid. prototyping from the d~sktop isn't Just 'a wish ·anymor.~. Fo~ . C~. 3 USers iriind~stries as 'varie:d as automotive, aerQspa~~, '. . . '. . con~er 'p'roducts, medicine· and ~ducation; i( s the n~w way to .Roland ... · work. ~ll us ·at 7. 14-975-0560 for~ore inforinati~n. '.. DIGITAL GROUp;.' . '. . .. ,'.,

U.S.A./MEXICO: (714) 975·0560; CANADA: (604) 270·6186; AUSTRAUA: (03) 818 0633; NEW ZEALAND: (09) 3098 715; SCANDINAVIA: 31 953622; SPAIN: (93) 308 1000; ITALY: (0861) 71 0292; ENGLAND/IRELAND: (0252) 816181; BENELUX: 32/ 14·57 59 11; HUNGARY: (361) 1868905; BRAZIL: (011 ) 2l0.7895;JAPAN AND ALL OTHER COUNTRIES: Roland DC Corp. (J apan): (053) 484,1201 GSA schedule available CIRCLE CARD 281 All trademark s are the properties of th ei r respec ti ve companies INPUT 3 and Group 4 format. Both feature optional integrated network inter­ HARDWARE faces to Ethernet or Token Ring. E-size Digitizer The J Series BubbleJet can produce Graphics Boards The Digitizer Division of CalComp drawings up to 17" x 22" in r~solu­ National Design, Inc. announced a Inc. introduces the E-size version of tions up to 360 dpi. The L Senes series of moves to upgrade existing EstiMat, a flexible digitizer de­ Laser can produce drawings up to products while holding or improv­ signed for estimating in . con s truc~ 11" x 17" at resolutions of 300,400, ing prices. The Volante Warpl0 has tion and related industnes. ArchI­ or 600 dpi. The J Series BubbleJet been replaced by the Warpl0Plus, a tects and construction estimators is priced at $2995 and L Series high-performance Windows/CAD can use EstiMat to perform "take­ Laser is priced at $5650. accelerator board featuring the S3 off' analyses-automatically 86C801 and supporting 16 colors at Contact JRL Systems, Inc. at 512/ 288- translating printed plans into area, 6750 or Fax 512 /288·7676. 1280 x 1024, and 1152 x 900, 256 length, or item calculations. . colors at 1024 x 768, and as many EstiMat has cordless electromc pen Desktop, Wide-Format Plotters as 16.7 million colors at 640 x 480. or cursor input options. The E-size Roland Digital Group has intro­ Pricing has been lowered on the EstiMat is available for $2395. duced new editions of it's WarplOLB, Warp10LB-2 (both local Contact Digitizer Products Group at SketchMate (desktop) and GRX bus products which double the raw 602 / 948-6540. (wide-format) plotters.The new display speed of the Warpl0Plus ~, small format models are enhanced and the ATI000 and AT2000 Senes with an electrostatic paper hold ISA bus products. Prices range from $299 for the Warpl0Plus to $1895 OUTPUT system. Specifications include a 16" per second plotting speed, HP-GL for the AT2000 Series. compatibility, serial and parallel Contact National Design, Inc. at 512/ Color Inkjet PlotterlPrinter interfaces, and a 5K buffer. The 329-5055 or Fax 512/ 329-6346. ENCAD'S NOVAJET II color inkjet new GRX models achieve a me­ plotter/printer offers imp~oved chanical resolution of 0.00006"/step. High-Resolution Monitor black-and-white line qualIty and an They have HP-GLIHP-GL2 compat­ EPSON added the 20" Professional enhanced color mode of 300 dpi. ibility, an auto-protocol, mirr?r, and Series II Monitor for large screen NOVAJET II has added several smoothing function that prOVIdes high-resolution design or graphics new convenience features. Users for high precision output of arcs and applications. Featuring a Sony can choose print modes (draft, curves. SketchMate printers are Trinitron CRT, it offers 1280 x 1024 normal, quality, and enhanced) priced at $1295 for the B-size and resolution, color clarity, line depending on quality and speed $995 for the A-size. The GRX definition and high contrast needed needs, and all relevant parame~ers models are $4995 for the D-size and for CAD/CAM, CAE, desktop are automatically set. Four addI­ $5995 for the E-size. publishing and imaging applica­ tional user settings (eight total) tions. With refresh rates of up to Contact Roland Digital Group at 714 / allow users to store their custom set 975-0560 or Fax 714 / 975-0569. 76Hz and an aperture grille pitch of of plot parameters or 0.31mm, it also offers software-specific settings. fourteen standard and eight Contact ENCAD at 619/ 578- user-programmable display 4070,619/ 296-0605 or Fax modes. The monitor is both 619/ 578·4613. DOS and MAC compatible. Suggested retail price is Image Printers $2749. JRL Systems, Inc. offers a Contact EPSON AMERICA at new line of printers for 310/ 782-5161 or Fax 310/ 782- imaging applications. The 5179. EasyCopy Line consists of the J Series BubbleJet Printer and L Series Laser VL-BUS Workstations Printer. Both have control­ Tri-Star Computer Corpora­ ler technology which enables tion is now shipping its new them to accept compressed line of 2nd generation VL­ raster data in CCITT Group JRL Systems' Easy CopyTML Se ries Leser Image Printer ard J Series Bubble Jet Image Printer BUS workstations. The new

June I July 1993 • KEY Solutions. 13 • • NEW PRODUCTS · •

workstations offer users the option and CoDraw are available at $159 be specially designed for automotive of dual removable hard drives. This each, or bundled at $395. CoVis is seal applications such as doors, subsystem allows the option of $395. hoods, and deck lids. Future configuring one large hard drive Contact CoHort Software at 510/ 524- releases will address aerospace, volume or two duplicate volumes. 9878 or Fax 510 / 524-9199. appliances, power plants, etc. Another configuration includes a Program output provides all of the VL-BUS IDE cache controller information required by the with 2MB RAM. This 66MHz engineer including animation of configuration offers a 16MB per seal cross-section, load/deflec­ second data transfer rate. tion curves, stress/strain Contact Tri-Star Computer Corp. at contours and force/time curves. 602 / 961-3401 or Fax 602 / 961-4010. The program costs $8000 in the single user version. Contact EASi Engineering at 313/ 377-4200 or Fax 313/ 377-2342.

Graphics Utility Inset Systems Inc. recently announced HiJaak PRO 2.0, an upgrade of HiJaak for Windows. Display Controller HiJ aak PRO lets you view, convert, ARTIST Graphics introduced the WinSprint 1000i, a high perfor­ capture, enhance, and print graph­ CAD to Mac ics images in the Windows environ­ mance display controller designed CAD to Mac, a universal CAD ment. In addition to the 60 graphics for document image processing. The graphics importer for formats supported in version 1.0, WinSprint 1000i displays 256 colors publishing, moves and translates and provides a non-interlaced HiJaak PRO can load Kodak Photo CAD drawings into Macintosh CD images directly from the CD resolution of 1600 x 1200, which publishing systems. It provides ROM. JPEG compression is built corresponds to 120 dots per inch easy translation of CAD drawings into the program, giving it the CDPI) on 19" monitors. WinSprint into Macintosh PICT format, and 1000i is unique in that it displays ability to compress images up to eliminates the need to redraw this resolution at a refresh rate up 200 to 1. An image catalog applica­ objects from scratch or work with tion allows the user to automati­ to 76 Hz, eliminating the flicker scanned bit-mapped images. It cally create thumbnail-sized that occurs with lower refresh supports popular CAD platforms rates. Retail price of the WinSprint representations of images. List such as CAD KEY, Mentor Graph­ 1000i is $1695 and it comes stan­ price will be $169 for the expected ics, SDRC, I-DEAS, AutoCAD, and dard with 2 megabytes ofVRAM. June '93 release. P-CAD which provide an HP plotter Contact Inset Systems at 203 / 740-2400 interface. The serial capture feature Contact ARTIST Graphics at 800 / 627- or Fax 203 / 775-5634. allows smooth transfer of drawings 8478. directly from a CAD system to a Graphics/Statistics Software Macintosh computer without Free Catalog CoHort Software of Berkeley, CA requiring disk drive compatibility. The Dataprint 1993 Catalog offers a offers a full line of high-quality, List price is $495. complete in-stock selection of brand IBM PC-compatible graphics and name Drafting, Plotter/CAD and Contact CELECT Software at 513 / 573- Graphic supplies at discounts up to statistics software for scientists and 6100. engineers. CoPlot creates publica­ 700/0-with same day shipment. This 84 page catalog features an tion-quality, scientific graphs of PC-based Design Software expanded plotter supplies section, data and equations. CoDraw lets EASi Engineering, Inc. has an­ drafting equipment, media, furni­ you create high-quality technical nounced the introduction of PC­ ture, calculators and more. drawings. CoStat performs statisti­ based software that can greatly cal analysis of your data. CoVis is simplify the design of air-tight Contact Dataprint Corp. at 415 / 340- capable of making animated seals. The first release software will 0550. scientific graphs. CoStat, CoPlot,

14' KEY Solutions' June I July 1993 Optical Storage Optical Laser, Inc. introduced a new series of optical storage subsystems for networking applica­ tions with up to 54GB capacity. The OptiDriver universal SCSI driver, bundled with selected jukebox configurations, allows systems integrators and OEMs to add optical storage to a network. The driver can be used with most WORM, Magneto-Optical and Phase Change erasable drives and most jukeboxes/autochan­ gers.OptiDriver is compatible with virtually all MS-DOS systems, allowing storage equipment to be Two days ago, connected together on the SCSI bus and treated as separate devices or Michael's prototype was drive letters. Contact Optical Laser at 800/ 776·9215 just a sketch on a napkin or Fax 714 / 536·0817. Right after a lunchtime brainstorming session, Michael faxed his sketch to 3D Systems Technology Center. Within two days Thermal Plotter Michael had a detailed 3-dimensional model to present at a critical IDEAL Scanners & Systems has design review meeting. announced the IDEAL!Contex FSP Now, thanks to 3D's rapid prototyping technology, Michael's project 4200 direct-imaging thermal is six months ahead of schedule and under budget. technology plotter. The 36" wide, And, he's also cut his product's time-to-market dra­ 400 x 200 resolution plotter is matically. Stereolithography by 3D Systems has given Michael and his company the edge over the competition. designed for high-speed raster image output. With a SCSI 2 3D's Tech Center is the world's leading resource interface, the plotter is platform for solid imaging technology. The Tech Center transforms your ideas into 3-dirnensional objects independent, mirrors the IDEAL! 3D "s Qu i ckCast~ using any design documentation, from napkin produces investment Contex FSS series of multi-platform sketches to CAD files. castings in such metals as scanners, and is supported by the , . . . .. steel, aluminum~ copper- CADImage software family. List The Center s solid Imagmg technology speCialists beryllium and titanium. have the experience and resources to produce concept price is $10,900. models, patterns for soft and hard tooling, and preproduction parts in Contact IDEAL Scanners & Systems at plastics or metals. In fact, through 3D's QuickCast™ rapid tooling tech­ 301 / 468-0123 or Fax 301 /230-0813. nology, the Tech Center gives you investment castings in record time. The Tech Center is not just for the Fortune 100 either. Every day small, Low-Cost SUN SPARC Systems dynamic companies who want to power products to market faster than Technicad, Inc. has announced the their competitors are taking advantage of 3D Technology Center's capa­ introduction of a complete SUN bilities. The Tech Center has become their vital, strategic partner in SPARC 1+ system for CAD/CAM transforming ideas into marketable products. users. The complete system in­ Put rapid prototyping and rapid tooling to work for you. For more cludes 25MHz SPARC processor, information and free brochures on 3D Systems Tech Center, 8MB of memory, 16-inch monitor, or solid imaging equipment, call today: 207MB hard disk and the SOLARIS 1.1 for under $3000. C) 3D SYSTEMS Contact Technicad, Inc. at 714 /258- 3D Systems Technology Center 2303 or Fax 714 /258-2305. 26081 Avenue H all Valencia, CA 91355 USA Telephone: (805) 295-5600 Ext. 252 Fax: (805) 295-0249 © 3D Systems, Inc.

FOR INFORMATION ON TECHNOLOGY CENTER SERVICES. CIRClE CARD 273 FOR INFORMATION ON SOLID IMAGING EQUIPMENT. CIRCLE CARD 274

June I July 1993 • KEY Solutions' 15 Rapid "A design isn't complete until it's approved physically by hand." -- but with competition becoming more fierce daily and the development cycle shrinking (6-9 months time to market) most companies can't afford to wait 3-6 months to view the first 3D models or afford to spend hundreds Pro and thousands of dollars to produce tools only to find that the design doesn't work or meet specification. Fortunately, technology is available that lets engineers have functional models hours (not days or weeks) after the design is complete. Engi­ neers, customers, management and marketing handle, fondle, assemble, test and verify the design together before any tooling or fixturing has been started. Design errors can be changed and marketing decisions can be made to cut costs, improve manufacturability or optimize perfor­ mance. This is concurrent and value engineering at its BEST! Rapid Prototyping Rapid prototyping is the ability to fabricate 3-dimensional solid objects out of raw materials from 3-dimensional CAD data in a fraction of the time required for conventional model building. The two most common approaches are through subtractive and additive processes. Subtractive means material is removed from a solid sub­ stance. These methods have been around for a long time and the tools used for subtractive processes are part of conven­ tional model Parts produced making. These Part produced by by SLS process. tools include LOM process. CNC mills, lathes, EDM's and lasers. Additive means a shape is produced by adding or building up raw material (liquid or solid) by lasers. This can be accomplished by technologies which have caused much excitement in the industry. The software for, and automation of, subtractive machines has ad­ vanced in the past few years and they are assured a place in the future of model building. However, this article focuses on the newer, less familiar state-of the-art additive processes. Additive Processes All the additive methods have some common elements and steps. Basically, three-dimensional data is converted to an STL transfer file which is then put through a slicing file where it is "sliced" into thin sections or layers ranging from .002 to .025 inches thick. The raw material is then prepared by leveling or registration, and the first or bottom layer from the slice file is "drawn" on the raw material with a laser. The laser fuses, cuts or solidifies the raw material and a thin 3- dimensional cross-section is produced. The completed section is then lowered, the material leveled and a new section is placed on the existing section. Each new layer is bonded with the previous layer. Finally, the completed part is removed from the machine for post cure and bench work. A few steps are necessary to tion, the part is post cured and the Summary and Future prepare your 3D data file for use structure removed and benched. Rapid prototyping is valuable with additive rapid prototyping Selective Laser for conceptual or design verifica­ machines. The CAD database Sintering (SLS) tion, but it is also exciting from must be 3-dimensional solid. This . SLS produces parts by fusing the tooling and small volume can be achieved by using solid thm layers of powdered material aspect. Since rapid prototyping modelers or developing a with a laser. The principle is can produce 3D physical parts in wireframe similar to the hours, it can also produce masters and convert- SLA, but to be used for RTV and Epoxy ing it into a powder molds as well as metal castings, solid. Potential Uses material is etc. So depending on the tooling CADKEYhas Medical - Implants used instead process which best fits your needs, excellent Art - Computer Sculpturing of liquid. you could have 15 to 200 piece solids conver­ Geographic - 3D Contour Maps Another parts within days. In addition, sion capabili­ Aeronautical - Air Foil Design difference is rapid prototyping processes will be ties to handle Industrial - Computer Enclosures Architecture - Structure Remodeling that neither ~ble to produce the core and cavity this require­ Plastic Surgery - Facial Reconstruction post cure nor Inserts for injection molded tools ment. Archeology - Bone Reconstruction support and a lot more in the near future. Then the Dental- Jawrreeth Reconstruction structures are There are some concerns which solids data Education - Study required. The should be mentioned here. They must be excess powder are toxicity, cost, minimum wall converted acts as the thickness, heavy detail precision, into STL format. This format structure. There are several small detail precision, overall part basically breaks the solid data into materials available from DTM size and warpage. Fortunately, the small triangles called facets. Each including investment wax, nyl~n manufacturers are actively triangle is described by coordi­ and polycarbonate. Other materi­ researching and improving the nates and an inside and an outside als are being developed and tested performance and cost of their plane. The facets are used by the to help expand the SLS's capabil­ machines. system for slicing. The quality or ity. Additive rapid prototyping is precision of the triangles can be gaining momentum and saving chosen by the engineer as a step in Laminated Object Manufacturing (LOM) engineers and companies millions the conversion process. of dollars along with months and . LOM produces parts by cutting CADKEY can convert 3D solids years of time. As the paradigm thm layers of sheet material with a into STL formats. The STL format shift takes place and the industry laser and then bonding the layers conversion is not without prob­ moves to high gear, I see rapid together with heated rollers. The lems, but none are unsolvable. prototyping systems becoming a layers are positioned automatically These problems can be worked tool placed in every engineering and are supported by the excess through by bisecting the CAD department or even on each sheet material. One difference is database and by developing new engineer's desk -- similar to PC's. I that the perimeter of the part is conversion packages. also see the interface between the cut versus the entire solid being In general, the additive tech­ produced. This cuts build time and PC and the rapid prototyping nologies are much faster than costs. Another difference is that system being as easy as using and conventional methods. The follow­ the parts, when completed look hooking up a printer. It's going to ing describes a few systems which like wood, not plastic. ' be an exciting ride! IJ have been developed and are successfully being used in the Fused Deposition field. Modeling (FDM) Where to Get Information Stereo Lithography FDM uses a .050 inch diam­ Systems Apparatus (SLA) eter modeling filament wire which StereoLithography Apparatus is fed through a heated head and 3D Systems • 805/295-5600 . SL~ produces parts by solidify­ nozzle. The material is then mg thm layers of liquid photopoly­ Selective Laser Sintering deposited in thin layers as it mer by the use of a laser. As the DTM, Inc. ·512/339-2922 builds up the part. The material part is built, it requires a support solidifies as it is deposited and Laminated Object Manufacturing structure that is attached to a requires little clean-up. This Helisys, Inc.· 3101782-1949 movable elevator. When a layer is completed, the elevator moves process, like SLS, provides the Fused Deposition Modeling down the thickness of the next ability to use different types of Stratasys, Inc . • 612/937-3000 material. Currently available for layer and the polymer is prepared Services FDM are wax and several for the next layer. Mter comple- Plynetics·510/613-83oo Stratasys-produced plastics.

June I July 1993 • KEY Solutions' 17 With FastSURF

by Claudia Martin

C oncurrent engineering is keypad is an offset more than a buzz word at IDE, of the free form Inc. This seven year old design handset geometry. and product development com­ In addition, each pany can produce prototypes in keytop was ob-round five weeks or less. All facets of and domed, result­ most projects -- from analysis, ing in a unique key research, development planning, geometry for each design,and engineering to proto­ key on the keypad. type development, tool building, (The proprietary Three·piece Mold fo r Elastomer KeyPad (shown in blue) . and literature production-- are over-all design done in-house. cannot be shown Chicago who digitized the model A current project illustrates until the product is released later with a Brown and Sharpe. Design their modus operandi. They are this year but IDE was able to Facets also uses FastSURF, so the developing a state-of-the-art share details of the keypad devel­ opment.) file was immediately usable by IDE.

IDE was founded in 1985 by industrial designer David Moriconi and mechanical engineer Peter Sehnal.

Moriconi has developed a methodology that allows a prototype to be produced in five weeks once the COMPANY design is complete. Sometimes prototype parts (from 5 to 30) of any geometry that can be injection molded can be manufactured by I DE in three weeks. These capabilities and the quality of their work have PROFILE increased IDE's sales to $1 .5 million annually and their client list reads like a Who's Who of International Business. This California-based firm currently has 15 employees. To contact IDE. call 408/438-2888.

telephone based on a brand new These organic surfaces were far Back at IDE, the FastSURF technology for Rose Communica­ more complex than any IDE had file was fine tuned and the tions, and producing 30 working worked with before. Moriconi was contours refined. Then, an IGES prototypes. confident that they had the tools to translation was fed to the model handle the job. They have used shop who built the molds with a They are designing, analyz­ CADKEY for a long time for its 3D 3-axis tree milling machine. The ing, and testing the telephone and solids capabilities. According to molds for this project were special components from the case and Dave, they use FastSURF because because of the complexity of the keypad to packaging of the of its flexibility and the fact that it parts. The negative, three-part internal electronics. works inside CAD KEY, which molds were machined in layers. Some extremely complicated made learning/training easier. President David Moriconi is challenges were presented by the Dave says that although they especially proud of the fact that organic shape of the telephone's probably pushed FastSURF to the IDE has achieved a truly case, handset and keypad. The maximum for the telephone project paperless system, and that the shape created by designer Hari it performed the job beautifully. company not only builds models Matsuda was presented to IDE The first step was turning the but is a role model of concurrent as a clay model. Not only are the clay model into a usable 3D CAD engineering. r:::3 contours and surfaces of the base database. The job was performed unit extremely complex, but the by Dave Plahm of Design Facets in

18 • KEY Solutions· June I July 1993 Introducing a new evolution in product design, Digitize single points or polylines. Measure very large reverse engineering, and coordinate measuring objects with our unique "leap frog" technique. machines... The Metrecom is portable, durable, and gives you The Metrecom by FARO Technologies Inc. convenient, affordable precision in an instant! today and discover this amazing device for The Metrecom's articulated arm measures points and orientations of objects in complete 3D for direct serial port input to AutoCAD, CADKEY and other leading software packages. Custom interfaces are available. Simply connect the Metrecom to your system like another mouse! by Jack Bilderback, CPIM

Concurrent engineering. A programs and have instituted Companies with shortened common definition involves coop­ quality measurement systems for product development cycles are in a eration between departments - the their suppliers. Indeed, the end position to not only capture market coming together of marketers, sales user or consumer insists on quality share, but in some cases define the people, engineers, buyers, manufac­ and reliability. Further, the pursuit market itself with innovative or turing personnel, and field service of speed, if managed correctly, is feature-laden products. It is also a techs in the design process. It's the entirely consistent with every corollary that being first to market way to include many points of view quality precept. includes the opportunity to com­ as early in the design process as Since low cost and quality are mand a premium price for that honor. possible. now just the ante to get into the The American automotive But concurrent engineering has game, a company's ability to industry seized the concept and has another dimension. As important as produce quickly and with innova­ begun to make serious inroads in it is to involve all pertinent parties tion provides the edge which will the lead that Japan developed over from the beginning, reducing the determine winners and also-rans in the U.s. in new car quality and total amount of time it takes to the 1990's and beyond. time-to-market cycles. This in turn deliver an end item is even more Synonymous has led to vital. with speed in By challenging existing increased sales Speed has replaced the strict discussions procedures and focusing on revenue and focus on cost in improving a pertaining to consistent, steady improve­ market share. company's performance and com­ competitiveness ment, positive results are Chrysler's new facility in petitiveness because speed, or more is flexibility, or inevitable correctly the lack thereof, has the ability to Michigan is a become the most influential ele­ make rapid changes in design or monument to concurrent engineer­ ment affecting cost and profit. An product mix once in production. ing which brings together all economic model developed by the Flexibility also assumes an impor­ stakeholders in the beginning of the McKinsey & Co. management tant role as companies discover the design process. The result has been consulting firm several years ago need to modify their strategic plans a revolutionary new product line, showed that high-tech products in favor of increasing the speed at the LH car, brought to market far that come to market six months which they do business. faster than any preceding model. late but on budget will earn 33% The Saturn car company, a GM subsidiary, reflects those ideals and less profit over five years. Those Japan, U.S. and Speed completed on schedule but 50% over is also proving worth the gamble. A dedication to speed has budget cut profit only 4%! Intel is an excellent example of a existed in Japan for many years, company with a speed culture. Among those companies who and is in fact the game plan most Their microprocessors are at the have grasped this fact, speed has responsible for many of the suc­ forefront of technology, and they also supplanted quality as the cesses we read about. It is also the dominate their industry. They have primary focus area. This isn't to say fundamental strategy for many u.S. made the constant improvement of that quality is no longer important. competitors who have chalked up their design and manufacturing Rather, today quality is regarded as significant achievements in new processes an important part of a given. Most customer companies product introduction and/or cus­ doing business. have developed internal quality tomer service.

20. KEY Solutions· June I July 1993 The now-famous Motorola pager and the direct labor force. Next Operation As Customer, a is also testimony to the effective­ When working to reduce cycle system aimed primarily at the ness of a strategy based on the time, each step should be analyzed service industries, was developed ability to respond rapidly to both a and justified based on the value it under the auspices of the American marketplace and individual con­ provides in the flow chart of the Management Association by Keki sumer need. The manufacturing business process as a whole. If an R. Bhote, a senior corporate con­ cycle time of the pager improved operation adds value, determine the sultant on quality and productivity from 3 weeks to 2 hours, and the optimum time required to accom­ improvement for Motorola. Derived average product development cycle plish the task. If it adds no value, from an idea by Dr. Kaoru at Motorola shrank from five years eliminate it from the process. Of Ishikawa, the father of the quality to 18 months. course, it is then the challenge to go movement in Japan, it provides a after that optimum goal with a blueprint for process review and Importance of Processes relentless sense of purpose. redesign in an effort to not only reduce cycle time but increase Tools, like systems or processes, For those of us who have spent quality and productivity. exist to make a job easier and much of our professional lives at increase productivity. From early desks or working in an office, the manual implements to sophisti­ revelation that according to a study Benchmarking cated CAD/CAE/CAM software on productivity conducted by the Benchmarking, or comparing today, the level of effort required to Illinois Institute of Technology, blue one's own effectiveness to that of a accomplish a task and the quality of collar productivity in manufactur­ competitor or role model, serves to output have been sources of inspira­ ing has been consistently above 80 gauge just how much improvement tion to those intent upon advancing percent and rising while white is going to be required. "Best-in­ technology through tool design. collar productivity in office environ­ class" companies, or those who Tools alone, however, provide only ments has been below 40 percent stand out as examples of superior so much impetus to revolution in and falling, is an embarrassing eye providers of service or products, performance. In addition to tools, opener (or confirmation of what we furnish truly ambitious goals for the methods or systems employed already suspected). Most impor­ anyone looking to improve--regard­ to achieve an end must be consid­ tantly, it should also serve as the less of which customers or markets ered and revamped. clarion call to apply all the energy are served. A well-performed necessary to achieve the same process has universal application. Mea su ring Cycle Time results in white collar work that are A not uncommon mistake is to How does an organization not seen in manufacturing. evaluate an activity or step in a only take advantage of the latest The theory of internal customers process based on its impact to the technology with the tools it chooses, versus external customers also immediate area. It is entirely but also create an environment in provides a new perspective to possible that an improvement made which all activities are designed to improving process cycles. NOAC, or in one department can lead to an add value and eliminate wasted effort? The measurement of cycle time Design/Development Cycle Time is an important place to begin. Cycle times are most often associ­ COMPANY PRODUCT OLD NEW ated with manufacturing activity. Surprisingly, according to the Honda Cars 5 years 2 years Thomas Group, a Dallas consulting AT&T Phones 2 years I year firm specializing in speed, between Navistar Trucks 5 years 2.5 years 60% and 90% of the cycle times Hewlett-Packard Printers 4.5 years 22 months critical to achieving competitive­ ness occur outside the manufactur­ Manufacturing Cycle Time ing area. In fact, all processes can be COMPANY PRODUCT OLD .tll.W broken down, measured, analyzed and improved upon. Whether we're General Electric Circuit Breaker Boxes 3 weeks 3 days looking at engineering routines, Motorola Pagers 3 weeks 2 hours Hewlett-Packard Test Equipment order entry, daily accounting 4 weeks 5 days Brunswick Fishing Reels 3 weeks I week systems, scheduling the factory Matsushita Washing Machines 360 hours 2 hours floor, or processing data and Harley-Davidson Motorcycles 360 days 3 days administering office activity, to be successful it is necessary to apply this concept to every area of the Examples of companies who instituted a speed culture, resulting in improved competitiveness. Reprinted company, not just in production with permission, APICS, "Time-Based Competition: Building the foundations for Speed," 35th Annual Conference Proceedings, Phillip L. Carter and Steven A. Melnyk, 1992, pp. 63-67.

June I July 1993' KEY Solutions' 21 overall reduction in effectiveness by Streamlined Communication Team-Based Problem Solving adding time elsewhere. It is the Streamlining communication is Team-based problem solving, improvement of the entire cycle another area worthy of focus. the essence of concurrent engineer­ time, from beginning to end, that is Communication has considerable ing, is another highly effective the true measure of success. impact on the speed with which method of tearing asunder the things happen, and improvement impediments to a quick-response Measure and Publish may be accomplished in a number mentality. Once a business process has of ways. The serial mode in which been identified and broken down One is a reduction in organiza­ problems are handed to the depart­ into components, and a target tionallayers. This has become a ment down the line becomes a established for cycle time reduction frequent and popular subject nightmare of less-than-adequate (by benchmarking or using statisti­ precisely because it presents a . communication, offering no guaran­ calor theoretical possibility), it is tremendous blueprint to increase tee of truly creative solutions. It's absolutely essential that it be the rate at which decisions are amazing how much energy is spent measured as frequently as makes made and . wrangling with fellow sense. There's an old saying: if it improvements Focus on time and on how workers over issues implemented. which should really isn't being measured, it isn't being much of what is done managed. It's worth bring people together. really adds value to overall pointing out Mter all, the competi­ Hand in hand with measure­ operations and customer ment is publishing and distributing that a reduc­ tion is outside those expectations. progress reports, preferably in the tion oflayers four walls, isn't it? form of charts or graphs (a picture does not The breakdown of the is worth a thousand words). The necessarily eliminate people. Roles functional mentality is a precursor publishing of progress is essential change as organizations are rede­ to optimizing human resources. for two primary reasons. It will fined and provide previously The authority to make decisions keep all those who are interested unidentified opportunity for those must go along with training in informed. And it will keep all those in jeopardy of being phased out. But team-based problem solving. involved motivated. the goal must definitely be the Training and empowerment of flattening of the pyramid. those trusted to find the solution to

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22. KEY Solutions· June I July 1993 CIRCLE CARD 247 problems is critical to a speed-based philosophy. An extension of the team For Further Reading: approach would include those outside the company. To create an Competitiveness Through Total Cycle Time, Thomas, Philip R., unbroken network of suppliers, McGraw-Hili Publishing, 1990 internal departments, and custom­ ers, a prescription of regular visits, The Goal, Goldratt, Eliyahu M. and Cox, Jeff, North River Press, early involvement in the design Inc., 1984 process by both suppliers and How Managers Can Succeed Through Speed, Dumaine, Brian, customers, and expanded use of Fortune Magazine, February 13, 1989 technology in the form of the fax machine and electronic data Next Operation As Customer (NOAC), Bhote, Kekl R., American interchange to handle specs, Management Association, 1991 drawings, bills-of-material, pur­ chase orders, shipment authoriza­ The Race, Goldratt, Eliyahu M. and Fox, Robert E., North River tions, invoices, etc. would increase Press, Inc., 1986 . the rate at which business takes place. Shifting Paradigms, Garwood, R.D., Dogwood Publishing Co., Inc., 1990

Conclusion Time-Based Competition: Building the Foundations for Speed, The habits developed and Carter, Phillip l. and Melnyk, Steven A., APICS 35th International institutionalized over what might Conference Proceedings, 1992 be many years are oftentimes representative of stagnant and World Class Manufacturing, Schonberger, Richard J., The Free comfortable routines. However, by Press, 1986 challenging existing procedures and focusing on consistent, steady improvement, positive results are inevitable. The worst that can happen is less-than-total success. It is preferable to record many small increments of improvement SPECIALS which occur on a regular basis versus the one great leap which I.LI Get into CAD economically! happens infrequently. • Above all, focus on time, and on Ioline Demonstrator Plotters • how much of what is done really U • adds value to overall operations and 3700 Single Pen Plotter $2425 • customer expectations. There Z 4000 Single Pen Plotter $2850 should be a concerted effort to both 5000 Signcutter/Plotter $4840 • accelerate the response, and to 5000 Single Pen Plotter $3445 develop an organization structured C • and managed to respond. The size of the company doesn't matter. The D! CADkey end of line • product or service provided doesn't matter. Speed is not about frenetic 386 Ver 4.06 $1745 • activity or longer hours or more C Light Ver 4.0 $ 125 • people. It's about being effective in SPARe Ver 4.06 $1995 CALL what we do by analyzing our I.LI IGES Ver4.0 $ 495 activities and eliminating those EMJ which do not allow us to work .I smart as opposed to harder. I] TODAY! East Coast U Visa and Master Card accepted. 1·800·548·2319

CIRCLE CARD 276 June I July 1993· KEY Solutions· 23 CAD KEY ADVANCED MODELER · NURBS·Based Surface and Solid Modeling by Stas My/ek and Frank Simpson

The first of two articles on the new

CADKEY®ADVANCED MODELER

explores the latest technology, explains

the ADVANCED MODELER's basic

capabilities, and offers insights on the

benefits of integrated NURBS-based

surface and solid modeling. The next

article will describe and analyze the

ADVANCED MODELER's more complex

capabilities and discuss Cadkey's future

direction for this new technology.

Traditionally, surface and solid MODELER (scheduled for release plines to reduce operator complexities modeling has required a high level of early third quarter, 1993) breaks and to shorten the design process. The sophistication from both the user and down the boundaries of traditional objective was to develop a package the technology. Most surfacing and design and opens the door to new that would give users who are less solids products in the past operated on and innovative, easy-to-use design experienced in 3D modeling simple workstation platforms whose use was alternatives. tools for constructing 3D models and limited to the more experienced CAD Just what are NURBS, and what give designers who are experienced in users. The learning curve for these do they mean for a CAD user? 3D modeling faster and more efficient tools was much longer than conven­ NURBS are Non-Uniform Rational methods for complex modeling applica­ tional CAD, the interaction of the B-Splines. A Non-Uniform Rational tions. products was cumbersome, and their B-Spline is a basis (or building­ NURBS·based Surfaces capabilities were often too limited for block) spline that has mathemati­ and Solids complex design. cally verifiable node or knots points The ADVANCED MODELER is an Due to technology limitations, located at irregular intervals in integrated surface and solid modeling many products weren't flexible enough three-dimensional space. NURBS package which utilizes state-of-the-art to allow designers to mix both surface provide increased flexibility for NURBS-based technology. It ad­ and solid modeling techniques. In fact, creating, displaying, modifying and dresses the industry's movement surfaces and solids functions were exchanging design data. towards NURBS modeling by offering usually separated; what was designed The ADVANCED MODELER a wide variety of surface and solid as a solid model had to be brought into will put unparalleled design capa­ modeling capabilities, solid primitive a separate surface module (if, at all) bilities in the hands of designers construction, extensive editing fea­ for downstream design or manufactur­ and will set a new standard for 3D tures, and an advanced IGES bi­ ing. This interaction was not always modelers. As the first phase of directional translator. The use of the transparent to the user. several scheduled releases, the entire product has been simplified With the advent of integrated ADVANCED MODELER allows with an easy-to-use tool bar and dialog NURBS-based surface and solid designers to combine wireframe, box interface which uses either icons modeling, the CADKEY ADVANCED surface, and solid modeling disci- or pull-down menus.

24 • KEY Solutions' June I July 1993 Surfacing visual feedback The surfacing capabilities are and allows them to divided into the basic modeling quickly generate techniques. These include tabulated each primitive. A cylinder, ruled, complex, 3-sided, user-defined swept, offset, and constant and snapping value is variable radius fillet surface construc­ displayed as the tion. Each surface type is described by geometry is indicating simple wireframe geometry dragged to assist and assigning the necessary param­ the designer in eters, if applicable. The subsequent defining the actual surfaces that are created can then be size and location of displayed as user-defined spline, line, the geometry. or polygon meshes, depending on the One of AD­ required format. VANCED Seamless Solid Modeling MODELER's more unique features is The ADVANCED MODELER 1) The PROFILE function is used to create an extruded solid from the 20 contour (yellow) provides seamless solid modeling the ability to driven along a vector (purple line). 2) A complex surface is created (yellow) based upon the cross· sectional information (green) in Step 1. The extruded solid is then trimmed to the capabilities through the use of primi­ create a solid by complex surface. 3) An extruded solid is created from the yellow contour. Th is solid is then tive construction including blocks, defining a 2D removed from the lever using a difference function to form the cut-out. 4)The top portion of the lever is produced as a solid. cones, spheres, tori, and user defined wireframe profile extruded profiles. These features allow and specifYing the desired thick­ primitives. For complex modeling the user to quickly and easily define ness. Once a solid has been defined, applications, surfaces can be used geometry which can later be manipu­ the user can combine primitives to when performing Boolean operations. lated and edited. form new solid primitives through This gives designers the ability to trim Interaction for modeling solid the use of Boolean operations: union solids to free-form surfaces. primitives has been enhanced to (addition), difference (subtraction), Unique Editing Capabilities or intersection. include dynamic construction. Users The beauty and power of an inte­ can dynamically drag or stretch a The Boolean operations found in the ADVANCED MODELER are grated NURBS-based surface and solid primitive into the desired configura­ modeler comes from the ability to tion. This gives designers immediate not limited to solid entities or Programmable Mice Save time. Save money. Save desks pace • Save wasted motion • Work heads up • Go portable

• Programmable buttons easily and instantly access the features of Cadkey, Windows, and DOS programs from your fingertips - without wasting time moving the cursor, wading through layers of menus, or reaching for the keyboard. • Buttons can be recorded on the fly. Or they can edited using the ProHance SmartButton™ macro program supplied. Simply call up the Editor, point to a button, and define it. Then save your changes to disk for use at any time. • No programming is required. Preprogrammed macros and templates are supplied for popular word processing and spreadsheet programs. An optional Cad key PowerPak™ provides pre-programmed macros, a template, and a PowerMouse™ and PowerTrack™ simplify and programming reference guide for Cad key user,s .,. $49. speed up your use of Cad key and other programs by • 6 programmable functions per button using shift keys. putting function keys, immediate mode commands, menu shortcuts, and one-click, dragon-drop functions • 12-, 17-, and 40-button models available for access to 72, 102, or 240 functions. PowerMouse/50 $99, PowerMouse/70 on your pointer. The macro-programmable buttons $125, PowerMouse/100 or PowerTrack/100 $175. automate routine tasks and conveniently group them at your fingertips for immediate, click-n-go access to • Excellent cursor control provided by 20-5000 DPI, 20-5000 the features of your software - without moving the reports/second, and user-definable ballistic gain. cursor off your drawing, wading through layers of • Windows TOP100 award w inner. menus, or playing finger gymnastics with the • Compatible with PC-based DOS and Windows programs. keyboard. As a result, you draw at top speed, stay focused on your work, save up to 2 hours a day or more, and reduce project times by up to 50%! We back this up with the experiences of thousands of CAD users and a 3~-day money-back guarantee. You will be Prices slar/. al surprised at the time and convenience gained. $99 ProHanee™Technologies, Inc. 415-967-5774 ProHancc, PowcrMousc. PowcrT ruck. PowcrPak . and Smar1Bution'i arc trademark s of Pro t--i unce Technologic ... , Inc. Au toCAD and AD! arc rcgi~ t cred trademark ... of Autodcsk. Inc.

CIRCLE CARD 206 June I July 1993' KEY Solutions' 25 combine a variety of editing and con­ surface unit. This level of function­ models by allowing them to take two struction operations between wireframe, ality is important when defining profiles, such as the front and side surface and solid entities. These tech­ complex geometry where multiple views, and combine their projections to niques are unique to personal CAD operations are required. create complex geometry. By relating systems (and in some cases many high­ Another unique capability is the construction to simple 2D drafting end CAD products) and are extremely "Punch" function which allows projections, this capability is especially important in creating and editing beneficial for those who are complex models. unfamiliar with 3D modeling. In the ADVANCED MOD­ Solids from Surfaces and ELER, surfaces can be used to Vice Versa trim solid geometry or solid Creating solid models does objects can be trimmed to not have to be limited to solid wireframe entities using the primitive construction and standard CADKEY EDIT menu. operations typically found in This integrated capability, found other surface and solid modeling under the TRIMlEXTEND and systems. With the ADVANCED EDIT-SECTION menus, dupli­ MODELER, the designer has the cate CADKEY's easy-to-use ability to create a solid from a set interface. of surfaces or explode a solid into Full surface trimming is also a surface model. supported in the ADVANCED By using the Solidify function, MODELER. By accessing the 5) A cylinder primitive is combined with a sphere using a Union option. 6) The two solids are combined to produce the final model. users can create a solid by same TRIMlEXTEND menu, selecting a set of surfaces which surfaces can be trimmed and extended designers to use typical 2D drafting contain a volume. This option creates a to one another. The same trimming profiles (wireframe) for creating or solid by "sewing" its boundaries to­ functionality can also be activated editing 3D surface and solid models. gether. This same process can be during any fillet surface operation by The Punch function allows design­ reversed through the Decomposition using the sew and trim switch. As ers to punch out or trim a desired function which converts (or unsews) a surfaces are filleted, the designer can contour from a surface or solid. This solid model into a set of surfaces. These automatically trim and sew the result­ feature provides designers with an unique functions are extremely useful in ant surfaces together to form one single easy method for constructing 3D defining complex geometry or isolating

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CIRCLE CARD 209

26' KEY Solutions' June I July 1993 PS/2 Macintosh ADD PROfESSIONAl. _IS HP/APOUO $199 $199 $199 $199 common geometry between mating components. IGES Translator Included Today the active use of more C~ HELVETICAMt:LVt: I 1L,f\ LIGHTCLI"-AM I ~ ..J than one CAD/CAM system is often 6 ERAS LIGHT CARTA 0 ~ the rule rather than the exception, o and data translation is critically m ~ TYPEWRITER Z ~ < important. In support ofthis ~ 0 m - m .~ ~.o h <. ""- Exchange Standard is an interna­ W ~~ ,. ~ ~ tionally recognized neutral format ~ ~ :z: ::IJ n for the translation of design data ~ ~ i= m (/) \1 ~UJ~tu ~m(/)~ ~ among different CAD and CAM NN~~ c: r systems.) The Advanced IGES ~~ =r Translator uses a dialog box inter­ metric spline surfaces (lGES type t--~ eQ >I::>.II wi V18V I a S~ Vv HU.::II 3 ':lnln"vnJNIH:J1M ItJ 126 and 128), offset surfaces (lGES :::::> 2u... U3N1.tS"II~)Nnll~S NV~O~NVWO"M S3WILS3P"lli.g type 140) and trimmed surfaces Emulations of trademarked fonts by Adobe"'. I Te.... Linotype .... FTNSA'" (IGES type 144). This functionality is in addition to drawing layout and instance data and the currently 1-800-447-4165 supported IGES entity types found CIRCLE CARD 245 in the basic CADKEY IGES pro­ gram. These provisions allow users to transfer valuable high-end geometry and dimensional data to Flat Pattern Development and from other CAD/CAM systems. With the ADVANCED MOD­ ELER, Cadkey has developed a ProFold works within CADKEY saving product which is powerful and you hours of manual calculations while flexible enough to be used by both developing accurate flat blank layouts. novice and experienced 3D design­ Menus within CAD KEY prompt you through the unfolding process. ProFold ers. The unique capabilities and eliminates errors inherent in manual NURBS-based technology used to calculations and uses double precision develop the ADVANCED MOD­ arithmetic to ensure accurate results. ELER is unprecedented in the area ProFold unfolds and folds your CAD of personal CAD systems and parts correctly compensating geometry represents an unlimited solution set on each flange. Bend allowance is for the future. [3 calculated for each bend area or you may specify the compensation. Editor's Note: For additional information about the use of NURBS in computer·aided design, see "NURBS: CAD by the Numbers." by Dr. Brian C. • Easy to use - Minimal input requirements Kuttner and Dr. Michael A. Lachance, published in • Automatically adds thickness to folded parts Action Line. January 1991 .

• Handles bends of any angle Action Line is a publication of the Automotive • User has full control of the bending operation Industry Action Group. Southfield. Michigan. • Part may be drawn with or without thickness Telephone: 313/358-3570. Fax: 313/358-3235. Dr. Kuttner is President and Dr. Lachance is Applied Production, Inc. Director of Research and Development. C-TAD Systems. Inc" a leading CAD·data exchange 200 TechneCenter Drive, Suite 202 company, Ann Arbor. Michigan. Telephone: 313/ Milford, Ohio 45150 USA 665·3287. Fax: 313/665·9736. Tel: (513) 831-8800 Fax: (513) 831-1236

CIRCLE CARD 275

28. KEY Solutions· June I July 1993 TAKE A PEN AND POINT TO

ANY PART OF THIS 1II SQUARE.

OR MOVE YOUR HAND ALL OVER THIS PAGE.

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1993 ANNUAl FREE 10-DAY TRIAL OFFER -- CALL NOW AT 1-800-726-6153 CIRCLE CARD 279 WIN AWA.D • ce a

Minimizing the Risk

by Claudia Martin

Over 200 years ago, an Italian physi­ unrelated to motions performedatwork, previous mice-even last year's models. cianreportedthat serious occupational because the symptoms (pam, numbness, The original mice can best be described diseases could develop from "irregular tingling) are usually most severe atnight, as "clunky." They were tall, boxy, and motions and unnatural postures ofthe hoursafterleavingthejob.Inaddition, featured square corners and sharp edges. It body." Guess what? Nothing's changed. there are no consistent patterns and the was necessary to move them as much as 8- According to the U.S. Bureau ofLabor symptoms begin so gradually that the 1o inches to move the cursor an equivalent Statistics, RSI, a muscular-skeletal disorder condition often takes years to develop. So distance. Clearly, ergonomics was nota causedby performing small repetitive the symptoms are often "written-off' as priority. Technical issues (e.g., being able movements, is the leading cause of arthritis or the "wear and tear" ofgetting to use a serial port and lessening the travel occupational illness. CAD operators are old. The condition can be out ofhand distance) took precedence. As these issues especiallyatrisk. beforeitis taken seriously. The truth is, were resolved andRSIbecame arecog­ While it's not in the same class as RSI can be so perilous that in severe cases nized problem, manufacturers began to AIDS,RSI (repetitive stress injury) isa victims have had to retire or change jobs. design for the human body. They noticed potentially serious problem for anyone who The ubiquitous mouse is small and (VOILA!) that the palm ofthe human hand spends long hours at acomputer using a most ofus tend to take itfor granted. You ina natural relaxed position does not have mouse and a keyboard. Although many may not have selected it as carefully as you angles butis composed ofarcs and smooth body parts can be affected, the wrist and did your computer, plotter and software. In curves. They noticed thatthe heelofthe elbow are the most common problem areas fact, ifyour current mouse was bundled hand was level with the wrist in a straight for CAD operators. This makes sense. If with ahardware or software purchase, it position and lower than the cupped portion. you're an average CAD KEY operator, you was selected for the best bundling price, Some of the issues in mouse ergonom­ know you spend much more time every not comfort or fitforyou. ics are the distance the mouse must be day holding hands with your mouse than Fortunately,asthedangersofRSIhave propelled, theangle(s) at which the hand, withyour significant other. However, become recognized, a whole new batch of wrist and elbow must operate, and the fit of propeUingthecursor across the screen ergonomic pointing devices has been the device to the hand and fingers. The new through drawings and menus, pointing and developed. Nowadays, a mouseis not just a crop ofergonomic mice has smooth curved locating, and pushllgmouse buttons mouse. The mouse is still alive and well surfaces and a low profile where the wrist multitudinous times cancause repetitive but has beenjoinedbytrackballs, pens and and heel ofthe hand connect. Improved stress injuries such as carpal tunnel unique devices like the Felix. These new resolution has reduced the "traver' required syndrome, tendinitis and tenosynovitis. devices address the ergonomics ofmouse to propel the cursor across the screen to Unfortunately,RSIisfrequently use. All are a vast improvement over less than 2 or 3 inches.

30' KEY Solutions' June I July 1993 Severalyears or other stationary pointing devices fill the your chair and your desk is essential. And ago alternative bill. Rearrangingyourworkarea to change do not forget good posture-slouching devices began to the position ofthe mouse/mouse padin puts unnecessary strain on your back and adclressthe relation to the computer and the keyboard weakens muscles. problems caused can also allow you to work with a straight by propelling the wrist. Here are a few hints. Exercise and Rest Take periodic breaks to rest your eyes, mouse across a • Position the keyboard directly in front of move your body, and get your circulation surlace. you on the desk. flowing. Try some ofthe following Trackballsand • Position the mouse at the same height as exercises several times during the day. the Felix are the keyboard. Try to avoid light sources • Gentlypress your hands against a table, stationary so all that can reflect on the surfaces ofyour stretch and hold for five seconds. the action is mouse and keyboard. • Stretch and massage your fingers, hands, performed by the • Ifyouuseamousepad,makesureitis wristsandforearms throughout the day. fingers and not so thick that it raises your arm and the Gently shake your hands and fingers to thumb. This mouse. Your arm should maintain an relieve tension and help blood flow . reduces arm and approximate right angle to the horizontal • Rotate your shoulders in a full forward wrist motion. tabletop. The mouse pad should provide circle four times. Then roll them backward - Until recently smooth friction for ease ofuse - it should fourtimes. Then rotate each shoulder trackballs were not be too slippery. separately four times. Do this at least twice also able to claim • Wheneverpossible, use your entire arm daily. that they tookless to move the mouse around. Avoid exces­ • Doconditioningexercisestostrengthen precious desk sive tension in your hand by relaxing -do hand and arm muscles. For example, space than a not grip the mouse too hard. squeeze a tennis ball for six seconds and mouse. As the • While you are using the mouse and then relax for six seconds. Or, squeeze your Courtesy of Microsoft Corp. resolution ofthe keyboard, keep your shoulders relaxed and fingers together while holdingyour wrist mousehas let your upper arms hang freely at your andfingers straight. With wrists straight increased, this sides. Let your elbows hang loosely near andhandsingentlefists,pressyourthumbs feature is less of a your body and allow enough room on your into the sides ofthe index fingers; hold, difference. deskforunhinderedmovementofthe relaxandrepeat. The mouse, trackball and Felix all mouse. Your forearms should be nearly • Rest. Give your hands and wrist periodic perform well as pointing devices, but the parallel and at approximately rightangles breaks. Switch hands, ifpossible; alternate feel ofthese devices is so different that to the floor as you type. h ard and easy tasks; or rotate work most users prefer one over the other. • Minimize repetition. Avoid holding the activities. Presently, the mouse seems to win outin mouse the same way for long periods of A physical therapist who specializes in popularity with users. There maybe time. This helps you from repeating the treating dancers and musicians inNew something more intuitive or natural in the same motion over andover, and avoids York says, ''People need to release tension mouse, or it may be just tradition since the unnecessary strain on your arms and hands. and shake the muscles out when they finish mouse came first. • Learningevery keyboard command and any repetitive activity, whether it's equivalent available, and macroingas You should be able to find a match, but dancing,playingtheviolin,orworkingata many operations as possible should help like shoes or hats,findingafitisa very computer. They need to learn how to you get your hand off the mouse. Using the personal matter. properlyrelaxtendonsandstretchjoints." function keys and Immediate Mode So, shake those hands and fingers, stretch An Ounce of Prevention Commands in CAD KEY canhelpim­ them gently, and remembering that the Minimizingtheriskofmou se· related mensely. Windows also has many "wrist bone's connected to the arm bone" RSI involves more than buying an keyboardcommands. etc., relax the muscles inyour neck several ergonomically designed device, although times a day. Drop your chin to your chest thatis important. Other factors are the Chair, Desk and Posture and then stretch out your arms and physical arrangement ofthe work environ· Achair that is adjustable in height is a shoulders. [J ment, how you actually use the mouse and good place to start. It should be comfort­ keyboard, and how you take care ofyour able and provide firm support to the lower body (things like posture and exercise). back (lumbar region). Ifyour feet don't rest flat on the floor, use a footrest that is high Using the Mouse enough so that your thighs are parallel to Analyze the way you use your wrist the floor while you are seated. and arm. Itis important to keep your wrist Ifpossible, place your system on a neutral. This means avoid using the wrist desk L.2signedfor a computer. Traditional in a twisted or bent position; maintain a writing desks are sometimes too high for straight wrist position. For some, trackballs computer use. A proper height between

June I July 1993. KEY Solutions· 31 MOUSEMAN SICOS Colani Mouse Logitech's new MOUSEMAN is a The SIC OS was designed by Luigi three-button mouse with ergonomic Colani, a well-known European features. It has a low rear end that designer using the principle of bio­ allows the heel of the hand and the design. This mouse looks like a mold of forearm to rest on the work area for a person's hand in a relaxed position firm support. Its smooth, hand­ on a desk and fits most hands like a conforming shape feels natural. glove. MOUSEMAN is available in right- and If you hold this mouse like a left-handed versions and LARGE for traditional mouse, it seems too large medium- to large-size right hands. for many hands and reaching the MOUSEWARE is a utility program buttons is difficult. You end up elevat­ that includes a drag lock key that ing the arm and wrist -- an ergonomic Microsoft Mouse 2.0 allows you to scroll across the screen "no-no." The suggested method is to lay The Microsoft Mouse has had a without holding down the mouse your hand and arm on their side with major overhaul and has been rede­ button, ballistic drivers that let you the thumb pointing up, reaching signed ergonomically. The 2.0 version slightly around to the buttons. This mouse is sleek and comfortable. In works for all but the smallest hand addition to the new shape, it has a and is surprisingly comfortable. shorter softer cable, longer and wider The mouse comes in right- and keys for more varied grips and finger left-handed versions. It operated positions, and an opto-mechanical smoothly and was recognized by our encoder which enhances accuracy and software without even installing the is more reliable. Teflon glides ensure SIC OS mouse drivers. The utility that no mouse pad is needed. How­ software lets you make mouse­ ever, there is a risk with not using a controlled menus for programs not mouse pad. The ball and mechanism designed to be operated with a mouse, can pick up contaminants from certain and contains pre-prepared menus for surfaces. dBASE, WordStar, Lotus, DOS and It is still highly DOS and Turbo. The documentation comes in CADKEY compatible, but there are English, French, German, Spanish, new software features just for Win­ adjust cursor sensitivity for extra and Italian. dows. These include: Orientation - lets precision or speed, software that lets Moustrak, Inc. also has a complete the user set the direction the pointer you easily create customized menus, line of mouse pads and custom com­ travels on the screen when the mouse pre-created menus to let you work puter accessories including wrist pads is moved; Snap-to - minimizes mouse more easily with popular non-mouse­ for keyboards, mouse gloves, and movements by automatically "snap­ based applications and control panels machine pads and anti-static pads. ping" the cursor to the default button to make it simple to adjust mouse with any command that results in a settings in DOS. Moustrak, Inc., 2701 Conestoga Dr. dialog box; Screen Wrap - moves the Logitech has several ergonomic cursor around to the opposite side of # 123, Carson City, NV 89706, mice including MOUSEMAN 800/221-6687,702/884-1931 the screen when it is moved off any CORDLESS and TRACKMAN, a edge; Locate - returns the cursor to the trackball. Logitech has a comfort center of the screen ifit is momentarily replacement program and a left­ lost; and Magnify - enlarges the screen handed exchange program. After area at the pointer to allow precise purchasing a Logitech mouse, you can cursor movement. exchange it for another Logitech you MS Mouse 2.0 fits a variety of hand think would be more comfortable. sizes. The documentation claims that it Right-handed mice may be exchanged can be used right- or left-handed, but if the dealer was out of left-handed we found it slightly awkward for left­ mice or a volume purchaser has both handed use. right- and left-handed employees.

Microsoft Corporation Logitech Inc., 6505 Kaiser Drive, One Microsoft Way, Redmond WA Fremont CA 94555, 510/795-8500 98052,206/882-8080

32 • KEY Solutions' June I July 1993 FELIX The feline name is the clue that this pointing device is not a mouse although it performs all the mouse functions. Felix has a one inch square movement caged in a 5.75 inch platform. It is controlle~ by finge~ motions similar to holdmg a penCIl. MOUSE-TRAK This unique design offers some interesting productivity enhancements MOUSE-TRAK is a Cadillac of and solves most of the ergonomic trackballs. In addition to standard trackball features (i.e., small foot print, problems associated with ~ic~. I:I0ld­ ing the Felix and moving It withm ?ne no special surface required, and square inch is a lot faster than rolhng stationary placement), this one is large a mouse to the edge of the pad, lifting enough to let the whole hand spread it up and placing it back on the pad. out comfortably and has an integral Like a trackball, Felix stays in one padded area that firmly supports the position. Because your palm and hand and wrist. forearm can rest comfortably on your MOUSE-TRAK can be used in a 2- desk and the motions are smaller, you or 3-button mode. The buttons are user take most of the stress and strain off definable for left- or right-hand wrists, elbows, shoulders and back. Technically like a digitizing pad in operation. You tell keys 1,2, or 3 to be Holding and moving the Felix is quite one square inch (an optical device . . positioned left, center or right s~mply intuitive. unlike the mechanical mouse), FelIX IS by changing the easy-to-access Jump­ an absolute rather than a relative The screen can be covered with ers. For tight areas and incredible device. Absolute pointers can allow for movements slightly over one inch. This precision, you can change the cursor more precise reproduction of measured small motion can cover screen sizes velocity instantly by pushing the small images, and can be easier to use for from 9 inches up to 40 inches. At start­ button on the face of the device. This detailed work. In addition, you can up you just touch all four edges of the slows the cursor down to a crawl. have fast motion for blasting around screen to "teach" Felix the size of your the screen, or slow down for finer It comes with software, but we had screen. it up and running instantly with the control and absolute accuracy. Felix's performance is different and Microsoft driver already on our Felix is based on optical technology takes some getting used to. One user computer. and never needs routine maintenance said that going from a mouse to Felix is or cleaning. The top-notch engineering in this like going from a pick-up to a high trackball makes operation smooth and performance race car because of its fluid. Its heavy 5 oz. cast phenolic ball precision and speed. These are the . Altra, 520 West Cedar, Rawlins WY is round to within +/-0.005 inches and qualities that make it a perfect candI­ 82301,800/ 726-6153 has Rockwell H85 hardness. The ball date for CAD. rests on hardened and polished stainless steel shafts with precision stainless steel bearings. Features and Prices An industrial model is even Mousel Device Ergonomic Platforms Special Price Company Type Features tougher for harsh environments and Features heavy use. Its case is a glass-filled FELI X Tablet I " active area PC, Mac Speed control, high $11 8 Xenoy® thermoplastic alloy; a Mylar® Altra 2-button low profile res, absolute device ring is added around the ball opening Microsoft Mouse 2.0 Mouse, Smooth PC Mouse Manager, From for protection from dust and debris; Microsoft 2-button shape Windows support $109 the PCB has a conformal coating for water resistance in high moisture Mouse-Trak Trackball, Elevated. padded SGI, Sun , Mac Industrial models, $179 ITAC 3-button wrist support PC, PS/2 speed control button areas; and the cable is shielded for additional strength and reduced EM!. Mouseman Mouse, Right-, left-hand PC, PS/1 & Mouseware utiliti es, $119 Models are available for most UNIX Logitech 3-button & large versions PS/2 exchange policy platforms, PCs, Mac and others. Colani Mouse Mouse Hand-shaped, PC , PS/2 Lowest cost, molded $79 Moustrak 3-button right- & left-hand Mac for human hand versions ITAC, 3121 Benton Street, Garland TX 75042, 214/494-3073

June I July 1993 · KEY Solutions . 33 IN MAY, THIS WAS THEIR LATEST TWIST IN MICE.

MORE OF EVERYTHING, EXCEPT A CORD. When Logitech MORE COMFORTABLE OUTSIDE. We continued the set out to design the world's most advanced mouse, we listened ergonomic evolution of the 25 million mice we made before it,

to the 60% of you that wanted one w ithout a cord * So ~ hile and built it with a shape that fits naturally into your palm and Microsoh was busy finding a "more flexible cable" for their new leaves your wrist relaxed. Then we added grooves to our mouse, we were getting rid of ours completely. The result is three keys that help your fingers find them easily. MouseMan® Cordless - not on ly the most hassle-free mouse to sit on a desktop, but (true to Logitech tradition) a pointing MORE POWERFUL INSIDE. Those three keys give you

device that's ergonomically advanced, outside and inside . something no other mouse can offer. Combined with

* From unaided responses in a large survey of computer users . tBased on independent test results. Detailed results ava ilable upon request. " CA and /VIA residents must pay sales tax . Offer expires October 15, 1993. Allow 2-3 weeks forfulfillment. TM/® Trademarks belong to their registered owners. N OW IT'S JUNE. INTRODUCING MOUSEMAN®CORDLESS FROM LoGITECH.

our unique-software, they cut down on repetitive motions by FREE 60-DAY TRIAL OFFER, DIRECT FROM LOGITECH. reducing frequent tasks to a mere mouseclick. You can, for We're so confident you'll love our new mouse, we want example, 'cut' and 'paste' 27% faster you to try it for free . Use MouseMan Cordless for 60 in WordPerfect',"l call up task lists, or days, and if you're fu lly satisfied, we'll bill you $99 double click by just pressing a button. (s hipping and handling included) ** If not, simply return These short-cuts make computing it, no questions asked. easier and faster , meaning one less way you 're chained to your computer. TO ORDER, CALL 1-800-732-31 78.

'@~ At~ , lOGIHCH MouseMon® MouseMon® TrackMan® for the left Hond for the Right Hand TrackMan® Portoble The Senseware'" Company

CIRCLE CARD 280 by Charles Taylor Selkirk High School has been adopted by KEySOLUTIONS in a pilot project to revamp vocational education in small suburban and

rural school districts. After months of preparation, they will be Industrial Arts instructor, Larry Jungblom, advises student Kelsey Damron on cutting a brass drop weight. Photo above: Selkirk High School, expanding their focus when school reopens in September. Metaline Falls, Washington.

"CADKEY.valley " is gram. A Bulletin Board classes are training with what we will soon be calling System is being installed in CADKEY. At the same this remote corner of East­ a prominent location in the time, the Omnilink ern Washington. Part of high school, and students Computer Training our program at Selkirk will be encouraged to use Center, located in the the E-mail and message community, is introduc­ capabilities to communi­ ing a CAD training cate with each other. program focusing en­ This is a clandestine tirely on CADKEY as the way of introducing principle software computers to the entire package. This program student body without has turned up two defining their learning skilled CAD operators experience as computer and preparation is instruction. Three or underway to train them four students, trained in as CADKEY trainers. C) its operation, will intro­ duce other students to the Student, Andrew Stewart, cutting a steel taper and hinge pin in experience, Selkirk's shop. and the stu- High School is the develop­ dents will be ment of a computer con­ responsible for sciousness in the entire teaching the community. Out ofthis will teachers to use it. emerge the support system Students will necessary for the successful soon be using the development of this radical BBS from home. change in the school's Selkirk voca­ vocational trainin g pro- tional education Student, Cory Baker, training on CADKEY® Light in Selkirk's Computer Training Room.

Photos by Adam Teem, Selkirk H .S. student .

36' KEY Solutions' June I July 1993 3D Desion, Model, and Machine

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CIRCLE CARD 257

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CIRCLE CARD 243 need to improve in. The data is software can not only be used for find the funds to give instructors collected using a slot reader, a pen adding custom competencies but the extra time needed to be famil­ reader and a portable collector. can be used to generate the iar with their new tools? The information in the portable student's identification badge bar We have the skill to give collector is downloaded into the codes. President Clinton and corporate classrooms PC at the end ofthe Additionally, the bar code America what they want. A ready day. system could be used for school work-force! But less than one CADKEY functions have now supplies inventory control or percent of the education budget is been put into bar code format, for library book tracking, again using spent on Vocational Education. We integration into this type of the students bar coded picture need to correct this situation. If system. The Student ScanTrac identification badge. Corporate Executives want a work­ 2001 is a complete system includ­ Using the Student ScanTrac force of quality, then put your ing slot reader, pen reader, por­ 2001 system helps streamline money where your mouth is! Help table pocket reader, bar code grading procedures. It takes the Vocational Education. Get your generating software, software to "this teacher just doesn't like me" company's lobbyist to put pressure program the portable pocket reader out of the excuse box for students. on your legislators to allocate the and the CADKEY bar codes. The It gives students a goal to aim for. necessary funds for Vocational pocket reader's programmable With the printout of the necessary Education to remain "state of the software uses a Microsoft Windows competencies for each course, the art". We need President Clinton interface and is very easy to student knows the expectations of and the legislators to give us what program. The information col­ the instructor and most impor­ we need now. BACKING! [J lected is downloaded in ASCII tantly the expectations of industry. delimited format into the database The Student ScanTrac 2001 Write to President Clinton or spreadsheet software. system is a great new technology to and your legislators and tell The bar code generating aid instructors and reduce the time them what you want! After required for record keeping and other non-instructional tasks. Yet this lesson, the reader will school budgets around the country GET INVOLVED IN do not keep up with the changes in EDUCATION, immediately! technology. If schools do not have the funds to keep current with A sample Bar Code for CAD KEY technology, how are they going to competencies.

We have the cans and cabinets to organize, protect and move your Video / Electronic Equipment.

GHC 144 Set up •• our CAD Station GHC134 0 GHC134 0 Set up for Stand-up Application. Same •• Leh, with Door Clo.tId THE GLENN HOWDEN CO. 1-800-786-CART 2875 W.. t 7th. Str_t • The Dall.. , OR 97058 Call anytime for more information • Patent Pendln9 All RIgh1a RMet'Y8d. GHC Is a Trade Mark of The Glenn Howden Co. All product namea are trademarks 04 their respective companlea.

CIRCLE CARD 269

40. KEY Solutions· June I July 1993 CADKEye CADKEY ADVANCED MDDB.£R combines wireirame. Pricing for ADVANCED MODB.£R. which includes Cadkey. Inc. has long been known as a pioneer e ADVANCED MODELER­ surface. and solid modeling in asingle desktop ADVANCED IGES. is S995. CAoKEY 6 and of desktop 3-Dmechanical design through its tool - the first program of its kind. As a NURBS­ ADVANCED MDDElER together are available for innovative. professional CAD system capabilities The latest breakthrough based product it extends design-to-manufactur­ S4.495 , or CADKEY 6, along with FAS"fSuRF'· and for MS-DOS and UNIX platforms. Users of our in 3-0 modelers. ing technology by greatly reducing operator ADVANCED MDDB.£R for S4.995. products all over the world rely on us to keep complexities. increasing the range of techniques them on the cutting edge of CAD. It's time for you and providing a more accurate and sophisticated to find out why.

3-D modeler.

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I I, I' I I ' 1"

'" , " " Maxi PRO-II • A Useful CAD Tool

keyboard has from the factory. When you click on non-volatile, a key using a mouse, the contents of on-board the macro is displayed, including memory. variable fields or text and execution Although the delay instructions. Pro TOOL also macro feature indicates if the macro contains can contain up modifiers, such as SHIFT, CTRL or to a total of ALT. Pro TOOL will be available 1,800 charac­ later this year. ters, it doesn't The keyboard has two sets of use any system function keys, one across the top The Maxi PRO-II is the memory because active macros are and one on the left, but physically industry's first standard (124-key), loaded in the Maxi PRO-II's only takes about 2 inches more fully-programmable keyboard. memory. desktop space than a 101 keyboard. Programmable means you can set Keyboard circuitry prevents Function keys on the left are a real up special keys to perform opera­ macros and customized features productivity advantage for pro­ tions in a single keystroke that from being lost when the power is grams like CADKEY and Word would normally require many off. The rate at which a key repeats Perfect which are heavily depen­ keystrokes, menu selections and/or itself when held down is adjustable. dent on them. command line typing. In addition, Repeat rates range from two to The function keys and immedi­ all the keys can be easily remapped thirty characters per second. ate mode commands are already so the keyboard layout conforms Macros can contain fields for very easy and fast in CADKEY. Will with the user's personal habits or interactive input of variables, and CADKEY users realize any benefits preferences. For example, you can delays to allow time for the function in programming macros for this exchange the locations of the "Caps to execute before the macro contin­ keyboard? Absolutely! Especially if Lock" and "Ctrl" keys. Keys can also ues. Macros can be suspended with you use involved, repetitive routines be programmed to perform special a single keystroke. on a regular basis. You can substi­ functions, such as diagonal cursor Macro libraries created for tute a single keystroke for compli­ movement. different applications are stored on cated command lines, multi-layer If some of this sounds familiar, it disk. An interactive pop-up utility menus or lengthy "boilerplate" text. is. The concept is simply the old­ program permits easy storage. Maxi PRO-II is available for fashioned macro function set in a Down-loading can be accomplished $129 and has a three-year guaran­ unique hardware environment at the command line or by including tee. The Tucson lOl-PRO (with 101 dressed up with special software the command line utility in an keys and top function keys only) has that does some nifty things. Obvi­ application batch file. the same full-programmability of ously, macro capabilities already This could get involved, espe­ the Maxi PRO-II and sells for $95. exist in many software programs, cially if you program macros for a Both products are manufactured by but Maxi PRO-II works with any number of applications. What if you Maxi Switch of Tucson, Arizona, a software, even those that don't have forget what you've done, make a leading U.S. manufacturer of macroing capabilities, and enhances programming error, or simply want computer keyboards for more than those that do. to see the contents of your macros? 20 years. The list of features is impres­ Maxi Switch currently has under sive. The Maxi PRO-II is plug development Pro TOOL, a software For information contact: compatible with IBM PCs and PS/2 utility that provides an on-screen Maxi Switch, Inc. 602/294-5450 computers. It automatically senses image of the keyboard that high­ or Fax 602/294-6890 the type of system you are using so lights user defined macro keys and there are no switches to set. The those that have been remapped

42' KEY Solutions' June I July RAPID PROTOTYPING DRAFTPRO PLUS: Enhanced, low Priced Pen Plotter REFERENCES

The pen plotter, that old The Rapid Prototyping Direc­ reliable engineering tool, is tory; CAD/CAM Publishing Inc; alive and well in 1993 in spite of the inroads ofthe $69.00. raster output devices like The Directory includes thermals and inkjets. In listings of rapid prototyping fact, pen plotters can be an service bureaus, equipment ideal solution for low volume plotting needs. manufacturers, vendors of The recently released specialty software for rapid Hewlett Packard HP prototyping, and suppliers of DraftPro Plus is a case in rapid prototyping materials. point. It is low priced compared to raster devices The Directory was compiled and of an equivalent size, is edited by the staff of the Rapid easy to use, has excellent Prototyping Report, a monthly found in HP's top of the line pen plot quality, and offers more newsletter. features than its predecessors for a plotter, the Draft Master. Line lower price. The DraftPro Plus, quality on curves has been im­ CAD/CAM Publishing Inc, replaces the DraftPro EXL and proved through an HP-developed 841 Turquoise St, Ste. E, San DXL and is available in E-size for algorithm. Addressable and Diego, CA 92109, 619/488-0533. $4,995 (U.S. price) and D-size for mechanical resolutions of 0.025 mm $3,695 (U.s. price). (.001 in.) and 0.0125 mm (.0005 in.) The unit that KEYSOLUTIONS ensure well defined lines and Rapid Prototyping & Manufac­ characters. evaluated lived up to HP's sales turing: Fundamentals of According to Richard A. Stearns, claims. It was easy to set up and Stereolithography by Paul get running right out of the box. Marketing Manager for HP's San HP plotters are normally a "plug Diego Technical Graphics Division, Jacobs, Ph.D.; Society of and play" proposition with "There continues to be strong Manufacturing Engineers and CADKEY. In addition, the look, demand for our low-end pen plot­ Computer Automated Systems ters. For many users, the DraftPro feel and operation of the unit was Association: 434 pages; mem­ "first rate" all the way, a quality we Plus will meet their need for years." have come to expect from HP Typical users include small engi­ bers, $65; $76, non-members; $3 plotters. neering, architectural or manufac­ postage. turing firms or small departments The new features of this plotter This book details how the in large companies. Most are users should help productivity. They stereolithography process works include a standard 1 MB of memory of stand alone PC's, although some to help reduce lockout time, and may be on networks. and how manufacturers can enhanced speed and acceleration, The DraftPro Plus comes with utilize it. Seventeen authorities improved by some 10 percent (to an industry-leading limited three­ contribute as chapter authors 1l0cm/s and 3g) over earlier HP year, on-site warranty. The origi­ and co-authors. Case studies DraftPro models. A Centronics nal DraftPro Plus (now discontin­ parallel interface (for improved ued) and the DraftPro DXL and involving Chrysler, Texas transmission times) has been added EXL plotters will be supported by Instruments and AMP illustrate to the standard serial interface. HP for five years. use of SL in design process. The menus are simpler, and a A good buy if you're needing a Society of Manufacturing vacuum fluorescent display panel pen plotter! Engineers, Customer Service clearly outlines operational steps. For more information contact: Total HPGU2 compatibility en­ Center, One SME Drive, PO Box Hewlett Packard Co. Direct hances the performance, imaging Marketing Organization, P.O. Box 930, Dearborn, MI 48121; 800/ capabilities, and standardization. 58059, MS511L-SJ, Santa Clara, 733-4SME. The new DraftPro Plus also CA 95051-8059 I] incorporates features that improve plot quality but were formerly only

June I July 1993' KEY Solutions' 43 by Martin van der Roest

In Barton, located in the City of Industry, documents. The mainframe had main requirement for understand­ California, is a recognized leader in the drawing management support built ing and planning implementation of manufacture and supply of flow measurement into the CAD system. A well a comprehensive drawing/document instrumentation for fluids and gases, and developed document control cycle management system. The first step caters to the oil & gas, industrial process, and had also been defined for the was to identify and define all power generation industries. Its products manual process that included drawing management needs and range from basic sensors to highly sophisti­ design, approval, archiving, and existing conventions. To do this, cated measurement sUb-systems for established procedures for the ITT formed a working committee applications requiring precise and reliable document release cycle once a with members from the ITT engi­ drawing was approved. ITT wanted neering and MIS departments and process control. The quality of its products is to computerize the entire process. The Group. highly recognized in the field of instrumenta­ They needed to tion throughout the world. Security manage a was another When In Barton's burgeoning design variety of CAD Primary DMS Requirements primary needs caused them to expand their engineer­ drawings and issue. ing design capabilities, high costs prohibited support Security Previously, them from expanding their existing mainframe documents and Multiple Page Drawings master CAD system. They also needed a cost more than Families of Parts documents effective engineering and document manage­ 30,000 raster Multiple File Types were vaulted ment system. files being on aperture converted from View Only Capabilities cards or old hard copy User Interface blueprints drawings. They Customization under the also needed physical ike many large compa­ additional control of L searching and viewing capabilities. the document control (DC) depart­ nies, ITT Barton used a mainframe-based CAD ITT found the PC drawing ment. When a drawing was re­ system in the 1980's to management options available at quested, DC would retrieve the design, manufacture and control that time very limited. In fact, document from the vault, get a copy their product configurations. They according to Mel Contreras, engi­ of the blueprint or send it to the had six terminals in the design area neering supervisor at ITT, "On the plotter and pass out a hard copy. hooked to a single mainframe PC, there was no solution." Al­ Once the revision to the drawing shared by their engineers. As though most systems could track had been made and approved, it design activity increased, ITT drawings, none were able to man­ was returned to DC who checked in needed to expand. More mainframe age their whole engineering envi­ the revision and updated the stations could be added, but this ronment. Their research led them master. Could this type of security was very expensive. The high cost to The van der Roest Group, Inc. be implemented over a network of mainframe system maintenance (The Group) who was developing a with multiple users accessing was also a negative. comprehensive drawing manage­ drawings directly? ITT started searching for a PC ment system and happened to be To complicate the issue, there solution. 3D CADWARE from looking for companies to help with would be a variety of users on the Temecula, California, helped them the development. For ITT, this was system. These users would be in review PC-based CAD software. an ideal situation. They would be different departments and each had ITT ultimately chose CADKEY on a able to find a solution to their special requirements for the type of problem, and also have the opportu­ PC network because CADKEY's 3D data they needed to access from the nity to influence the outcome. capabilities met their engineering master database of documents. design requirements. Analyzing the Needs There needed to be a way to restrict Understanding existing drawing access to only the data each user (or A major area of concern was group of users) required. Some managing drawings and related management procedures was the

44 • KEY Solutions' June I July t 993

users also only needed to quickly Since =any different types of ITT used to identify the drawings) view and/or print the contents of documents were being tracked and was assigned to each of the multi­ the documents (CAD, raster, word made available in many depart­ page drawings with the page processing, etc.) without being able ments, ITT needed an easy user number reflected for each file . to modify them. A "view-only" interface that let users search, When a user queried the system for capability would assist quality select and view a document auto­ a part number, a list would display control, purchasing, sales, and matically, without having to all the files with the same part other departments by providing identify or run the application that number and the page number of the immediate access to drawing data originated the file. Further, a file. while maintaining data integrity. relationship needed to be estab­ Tracking a family of parts from The next issue was the relation­ lished/maintained between files so a single drawing posed an interest­ ship between drawings. This was that if a change was made to one ing challenge and The Group complicated because each drawing file, the effects could easily be helped ITT customize the database could consist of multiple pages, and traced to the related drawing or to track this information. In DMS each page needed to be associated document files. Pro, a drawing is tracked in the with the same part number, but Implementation "document" database. This data­ have different page numbers PCs and a local area network base contains a unique identifier for assigned and displayed. Also, a replaced the mainframe for design each drawing and all support single drawing could be used for a and document control. This hard­ information such as drawing name, family of parts. An example is the ware downsizing saved money description, part number, etc. To screw in the illustration. (See immediately, even when the time track a family of parts, a "products" below). A screw may have one for developing the Document database was created which tracked shape but be available in various Management System and training similar information such as part diameter sizes. To address this, a was factored in. number, part name, description, etc. Then a field that listed the single drawing would maintain the DMS Pro, the base DMS soft­ unique identifier from the "docu­ base design and a note of the ware, provided the databases and different diameter sizes would be on ment" database of the original file the front end capabilities for search was added to the information being the drawing. Each diameter size and retrieval of documents. For the tracked in the "products" database. would have its own part number raster drawings, ITT selected that needed to be tracked to the This let the user query the "prod­ ViewBase ™from Image Systems ucts" database to locate a part and original screw drawing. Technology, Inc. To view CADKEY quickly retrieve the file from the files, ITT selected KeyView ™ from "document" database. The van der Roest Group, Inc. KeyView allowed users to access ITT brought the 30,000+ paper­ Screw Drawing Part # Size the drawing file directly without based files on-line in electronic format along with the documents Part # Size 1001 1/4" being able to modify it. This combination gave ITT a way to that supported their CAD environ­ 1000 1/8" 1002 1/2" ment. ITT looked at both in-house 3/4" make drawings available corpo­ 1003 and vendor based solutions for 1004 1" rate-wide without the risk of the converting the hard copy files. ITT @ 1005 1 1/4" drawings being modified or deleted accidentally. contracted this work to Visual Support Corporation of Troy, Sample of 'fami ly of part' drawing Another benefit was that ITT Michigan. According to Bob could customize DMS Pro so each Grisdale, vice-president systems, user could have their own interface "ITT was able to cost-justify the to the DMS depending on their work due to the amount of drawings The ability to track multiple file requirements. This provided ease that needed to be converted. It was types, view them and maintain of use for the casual user while very costly and time consuming for logical groupings and relationships giving the designers all the access ITT to maintain their current was also a desired feature. Initially, and information they required. system of aperture cards and CADKEY part drawing files would Each user had access to only those manually update their files each be tracked within the system. But documents or data relevant to their time a change was made to a ITT also planned to scan and job. This gave ITT the security they document. Now, ITT has an instant catalog over 30,000 paper-based required over their new LAN update if a change is made to any of drawings. These would be con­ system. verted to Group IV raster format the documents." and made available for quick The Specifics Creating relationships between retrieval and viewing. They also Tracking multiple page draw­ different types of documents was wanted to track documents that ings was easily handled. Each page also handled easily with DMS Pro. supported the CAD drawings in of the drawing was treated as a In the development of DMS Pro, formats such as word processing separate file. Internally in DMS three relationship models were and spreadsheets. Pro, the same part number (which identified: peer-to-peer, parent!

46 • KEY Solutions' June I July 1993 child, and derived. The peer-to­ peer model allows drawings to be associated with one another, pSERVERTM without implying a hierarchical Diskette Based Interactive Plot Server relationship. The parent/child model allows drawings to have a dependent/independent relation­ Don't Tie Up Your ship. The derived model allows PC For Plotting! documents that are a derivative of another document to maintain a pSERVER drives your plotter relationship noting a change from from plot files on diskette, so you the original file to the derived document. ITT utilizes the peer-to­ keep full use of your PC while peer model to maintain the multiple plotting. Use it stand alone, or page drawings. This gave ITT the connected between your PC and ability to check these peer drawings plotter for optional direct for any modification that was plotting too. The LCD front • Offline Plotting necessary. panel displays disk directory for • Plotter Sharing Viewing documents is now easy file selection, plot status and pen • Interactive File Selection and quick, merely a matter of change requests. • Multiple File Diskettes searching for the document and identifying the appropriate file. pSERVER keeps you in control Once selected, the document is of both your PC and plotter. automatically loaded into the Works with HI, HP, Calcomp s<::::?:> application or viewing software for and other CAD supported FAR MOUNTAIN the file. As a drawing or document plotters. CORPORATION is brought into the DMS Pro environment, the originating 1420 NW Gilman Blvd. Suite 2163 Issaquah, WA 98027 application is linked to the drawing. (206) 392,6541 DMS Pro also provides the ability to identify a viewing software, if CIRCLE CARD 238 available, for the application. This gives the users who do not have GET the POWER OF l\AousTABTM access to the originating application NOW BRING THE POWER OF A TABLET TO YOUR GRAPHICS SCREEN !' or do not have the right to modify the document, the ability to view MousTAB, with CADKEY's macro and cadi format, allows the and print the document. ITT user to glide thru the menus as much as 5 times faster using pop up Barton's PC/network and DMS dialog boxes and icon pictures of each function!! MousTAB has Also special HOT-KEYS for commonly used a DRAFT-PAKTM system also allowed them to functions!! overlay that opens integrate a variety of vendors into DRAFT-PAK CDE their overall document manage­ files and executes ment solution (CAD, DMS, viewing DRAFT-PAK and conversion ). functions up to Conclusion 100% faster. The system assembled by ITT has been in production for over a MousTAB year and continues to accommodate Sells for the ongoing evolution of the ITT $225.00 U.S. design process. By all accounts, the move to a PC-based DMS has been TIRED of waiting for your PLOTTER? a success, and ITT is, as a result, Add up to 40% more design time better positioned to meet its design with: KEYPLOTTM and document management chal­ Ask about: lenges. [J PATHDAT - directory organizer that K;;-PLOT allows you to manage part, pattern and cadi View Base ™ is a trademark of Image Systems Technology. Inc. $2S0~~~o~.s . fi les ,changi ng them within CADKEY. CADKEY T" is a trademark of Cadkey , Inc. PATHDAT sells for $175.00 U.S. DMS Pro TM and KeyView ™ are trademarks of The Call: CADTech Systems DISKSAVE - utility that compresses part van der Roest Group, Inc. 29 Arlington Street and pattern files up 80%. New Britain, CT. 06053 DISKSAVE sells for $200.00 U.S. PHONE (203) 226-4066 FAX (203) 226-4128

CIRCLE CARD 249

June I July 1993 • KEY Solutions' 47 Part 3 Stress Analysis with CAD KEY ANALYSIS by Craig Storms and Ken Fortier

This Is the third In a multi-part series designed to familiarize you with several Cadkey concurrent engineering tools. The first covered conceptual design of a cylinder storage bracket. The second evaluated the structural Integrity of the bracket using CADKEY ANALYSIS. This session shows three ways to Improve the design that give dramatic results when reanalyzed. The Von Mlses stress plot of the original design showed high stress concentrations at the sharp edges where the feet met the body of the part, and a large region of low stress at the center of the part. The redesign Includes larger cross-sectional areas and fillets in place of the sharp edges which transfer the forces throughout the part. In the low stress areas, a machined out pocket removes a considerable amount of material.

OPTIMIZING THE DESIGN OF A 3. Create a line parallel to the horizontal lines of the part CYLINDER BRACKET • Choose CREATE, LINE, PARALLEL, AT DIST. • Enter 0.6 as the parallel line distance. • Select the top horizontal line ofthe part and then 1. Load the part file select above the line to indicate the side. • Change to view 2 (ALT-V) and auto scale (ALT-A). 4. Trim the line to the edge of the part • Choose DELETE, SELECT, WINDOW, PART IN. • ESC to the main menu. • Enclose everything but the top of the part in a • Change the line limits to function using ALT-L. selection box. • Choose EDIT, TRMJEXT, FIRST.

D!1.U! SELler ~ IHDOM • Select the right half of the line and trim it to the 1 AU. I" :z lIMY 1M. edge of the part. J AU. WT 4 PRIll lIlT

, ""'''''ClID'" ZEDn 3 'EriIllL 111- P'OII'I 5 ru.!S 6 'tSPUl't STEP I 1 al1'1JIIOL 8 DWl'I ~ r-r-- I 'J flPPLIC ~~o<; ; L-__-'- _ _ ___ --'-___ I COIISJ I3' Se lect these posit ions aJOIDIW D-e .-.eH L.... _____••• _. ___•••. _~ ______. ____• __ • H

""'"'CWJIt .. cmaI:3. CCIJJlJ ;W D=4iI .Neeee " .. , nKllOft 0I00se M in...,... opllon 2. Change the view • ESC to the main menu. • Change to view 1 (ALT-V). 5. Define a new arc • Change the line limits to Viewport (ALT-L). • ESC to the main menu.

CADKI V CIDUE LINE PAJALEL AT DISt • Choose CREATE, ARC, ROUND. • Select the right half of the newly created line as the tangent entity. • Choose ALONGL and select the right half of the ' IJI MOC-UP original horizontal line. &.; ISCA.E STEPS 2 & 3 • Enter a value of .25 as the distance along this line. ttll.P Ulbl-l cr l.Hl ~~ l • Choose CCLKWSE to define the new arc. ALI!}.! IUfU-iI Cll l DI - 1i CDlSI i3D 6. Delete the parallel line CUJ IIIII ' IIM H . 811R1JiIB S" l .23JSIB • ESC to the main menu. • Use CTRL-Q to delete the line. ~; ~ : :~ f-.,""::;LOC=';-:...~ f~=""':-;L~I...:------""1 • Redraw the display using CTRL-R.

48 • KEY Solutions • Jun. I July 1993 9. Fillet all new arcs ' e..... zon • ESC to the main menu. 3.TIIII1. Tangent Ent ity 4 X-r.\ 5 rJlL1 • Choose CREATE, FILLET, ARC TRIM. 6.ISI'III' .....7 IDIIIIIL ,. • Enter a radius value of 0.6 . , fII'I'llC • Select the first arc as the first fillet entity. IUt- 11X1f .... • Select the horizontal line as the second fillet entity. STEP 5 Vial"! ...... CPlJfG: :< l .8 along th is line. • Select an arc as the first fillet entity and the clos­ aleS! :31 est horizontal line as the second fillet entity. (Re­ aDII ;W .__...... v "'-- peat for each of the arcs.)

Xl 1 . SZ1M5r;L::=::::x~=-==-==-______--; yp ' .'9!IM3! CIIGose .... 1" ,.,.. o,tlo. To correct mistakes and try again, use UNDO.

7. Copy and transform the arc Z'''"'''''' OIT 3UlAIL 1 X- J'tRI • Choose X-FORM, MIRROR, COPY, SINGLE. 5 fiLES ("ISI'LA'I , all..... 8 DELE!! • Select the new arc and press to end the 'J ArPLIC selection. • Choose 1 PT H (Horizontal), CENTER. Alt-E PIT STEP 9 tal UI!U: l • Select the large arc shown in the figure. ..."~.,- , lUll.. aJUJI to end the selection ...... UlJIfIE..., = l aJUJII .. • Redraw the screen using CTRL-R. amT: lI ,aJJIII... .- :1N 11. Trim the remaining lines .­ Mirrored Ent iti es • Choose EDIT, TRMlEXT, FIRST. rtKT11It a-e ""III fIDIJ optlDlt • Select the vertical lines as the entities and the new arcs as the trimming entities. (Select the part of the line you want to keep.) 8. Transform a copy of the two new arcs across • ESC to the main menu. the part 12. Draw parallel lines • Choose BACKUf-UP, SINGLE. • Choose CREATE, LINE, PARALLEL, AT DIST. • Select the two new arcs. • Enter a distance of 0.35. • Choose 1 PT V (vertical), CENTER. • Select the top upper horizontal line and cursor pick • Select the upper line across the top of the part. below the new parallel line (below the original). • Create a parallel line above the lower horizontal ,_DIRE, .. line. Z EDIT Se lect here us ing 3 DETAIL 1 X- FIlII 5 rll.13 I PTV .,.., IRlRL.!L "11151 ft DISPlAY 7 alllIIOI. e DELrn! , ArnIC

III11-! !lUT

STEP 8 IIIIJ' Mir rored ent it ies ,""",-,un!.. -, '.8 JAOC __ ...... , '"" £SOft lUll.. COUll.. STEP 12 allST:,. aDO"" ....__.- v 1O'1 . ..rn:zJ L . yP l..-n:eh"""""'=:o"'"',.;;;_...-:.,.=,... ::------I

: ::=::1-0.. ""',0<""'.:-: ....-0:'"""'=-;"",.------1

Jun. I July 1993 • KEY Solutions • 49 13. Create a rectangle 16.Select the top view of the redesigned part • Choose CREATE, LINE, ENDPTS, ENDENT. • Choose FILES, CADL, OUTPUT, and the file name • Select the right ends of both new lines. of the redesigned part. • Select the left ends of both lines. • Choose SELECT, PLANE, ENTITY. • Select any of the arcs in the top plane of the part. ,,,,,,,n (All geometry in the plane is simultaneously se­ 2 lDlY 3 JeIAIL lected.) 41C-FQQ 5 PILES 6 DISPLA¥ • Choose DONE to end the CADL output. 7 ClIUlIOL 8 DrI!l.ltl! 9 APPlIC 17. Run ANALYSIS on the redesigned part • Proceed through the analysis described in Work­ STEP 13 D shop 2. The redesigned part is smaller, lighter, and stronger than the original. The stress plot shows that the .- maximum stress fell to approximately 600 psi from _Tn. r.C~_=:-:..::-,,,:-:.,,.,;;::;-:apt=, ..:------1 2000 psi from the previous plot. With a safety factor of 3, the maximum stress value is 1800 psi which is well 14. Create fillets for the inner rectangle below the Yield Strength of 60,000 psi. • Choose CREATE, FILLET, ARC, TRM. • Enter a value of 0.3 as the fillet radius. • Select the sides of the rectangle to create four corner fillets. • ESC to the main menu. • Redraw the screen using CTRL-R. Before ,_CMIClY.. 2DIT 3.TAIL 4X-~ 5 PILlS 6 JISl'UY , all .... • mm 19 APPLIC

Alt- ! !KIT

STEP 14 ICJ11 :1JIl ...... SMM' : ~ L-TYP!"l -,L-tlI"' l .....DI: ...... - Save the results in a pattern file, which can be ...... - placed in any drawing (part file) for future reference. I-.- 'u. II!IIC PlICtlON o.oa.. WlIM I!JIl option

15. Complete the redesign • Choose X-FORM, DELTA JOIN, ALL DSP, ALL. • Enter 1 for the number of copies. After • Enter 0 for dXV, 0 for dXY, and - 2 (negative) for dXZ. • Change to view 7 (ALT-V) and autoscale the display (ALT-A). • Save the part under a new file name (CTRL-F).

1 CIlIA .. 2 l!1It 3 Dill!TAIL 4X-.... SI'ILES 6 DlSPtftf ,all.... '1IU.I!11< 9 AfJt.IC

STEP 15 ClIJ,DPP' ...... ,.SIIRP :OPP' .... L-T¥P!-t I.-t4Il-l_1 ....D' :fMD...... -...... ­- RllCTION 0.... ~l. IIDU o,t Ion

50 • KEY Solutions • June I July 1993 Cadkey Run Options

I[gJ oeij;;!fe!!!rn Olfactory J

Topic, 1 0 0 0 0 AUDIGO- o 0 0 1 PAlaNG o 0 0 1 QUOTAnONS 2000 LFMB 'HOOFER 1100 CADKEY SCREEN CAPTURES 1100 PRELUDE SCREEN CAPTURES 1300 EUaJD SCREEN CAPTURES 2400 VENDOR INFORMATION 2410 COMMUNICATlONS 'MTH VENDORS 14 1 1 NU-WAY SPEAKER PRODUCTS 2420 PRlaNG QUOTAnONS 3000 ENa..OSURE 3100 AUDIGO 3100 AUDIGO JUNIOR Section 3110 CONCEPTS v.1REFRAME 1 1

Topic NUWAY SPEAKER PROoucrs

Filename,lLoc:mion Document Description D:\CAOI

© 1993 PFB Concepts CIRCLE CARD 224 ARE YOU CK·Synergy Provides Extensive Drafting Too~

IMIZING Correct/on and Addendum CK-Synergy is a full featured pro­ gram with extensive drafting produc­ tivity tools. Unfortunately, several of its features and capabilities were omitted YOUR in the article on productivity tools in the last issue, especially in the chart. CK-Synergy has all the tools listed in the general purpose area of the chart with the exception of Beam, CAD/CAM Channels and Ducts, and has fewer styles of fasteners. It has, in fact, many unique features including: • Multiple nested bubbles • Tablet overlay included I , STMENT?? • Alignment lines with bubbles • Offset arcs • Match arcs T • Shaft breaks • Customizable standard notes program CIM Solutions & Networking measures its success with yours. The teams at CIM Solutions backed by years of • Spell checking experience provide APPLICATION - SPECIFIC, • 2 box & 2 Helvetica fonts Service, Support and Training to it's clients in Michigan, • 2 types of ANSI hole code Ohio and Indiana. tables • Enlarged/detail view callouts T • Full compatibility with CK solids and Picture-It Since the last article, a major up­ Contact us for a NO-OBLIGATION CONSULTATION. date has been released which includes Our goal is to MAXIMIZE your POTENTIAL a new user-friendly Icon menu inter­ face as well as a tube generation pro­ References available upon request. gram. CK-Synergy is a very general­ Corporate Headquarters ized tool and is not specialized for the aerospace industry. elM SOLUTIONS & NETWORKING 2200 N. Canton Center Road • Suite 210 A final note. The telephone num­ Ann Arbor, Michigan 48187 ber in the article was incorrect. For Phone: (313) 981-7470 information on CK-Synergy or a free Fax: (313) 981-7473 working copy, contact Hansen Design by calling 206/828-9863 (the correct number). I:J

CIRCLE CARD 265

52' KEY Solutions' June I July 1993 Frustrated with slow pen plotters?

NOVAJET.MII increases black and white print speed by up to 2000% and gives you full-color capability for only $7995.

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CtRCLE CARD NO. 201 CAPTLI~f THfS .....

by Ron Shea

In the past we have been held makes cents? captive by the "limitations" of That is just software. This has been true what it did. especially in the area of data Made money, compatibility, effectively defeating but not for us! It the "whole" purpose of computers reminds me of which is being able to take already going to the existing data and use it in another tire store to program, effortlessly. With output buy those devices, this was very easy - print elliptical the report; plot the part; stuff the shaped objects, so I can pay to have data into another computer through not perfect. YET! them balanced, so they will turn in an itsy-bitsy telephone wire. But, Better still is CADView version a circle on my car. happy CADKEY users, just try to 1.5. This software from Information get a part file into a word processor Cadkey would have none of this! Technology International Corpora­ or desktop publishing program. We will make a slide file, and save tion allows you to view, capture, As a professional writer, I have it in .SLD format so it will be import and manipulate CADKEY spent 13 years writing computer compatible with oranges and Dr. part files. You can copy it to the manuals, book reviews, and techni­ Halo, whichever you prefer. So let Microsoft Windows Clipboard and cal and training manuals. It used to me get this straight. You paid place the part file into such applica­ be that trying to get CADKEY part approximately $4000 for a CAD tions as Aldus' PageMaker. Thank files into a word processing or desk package, and had to pay an addi- you! Thank you! Thank you! top publishing tional $150 Documentation development made program or so to be easy - FINALLY! inspired me to ... just try to get a part file able to use Literally, CADView lets you view your part file in any view that gyrations and into a desktop publishing the data. dances you may NOT! has been defined. Top, Isometric or program user-defined views are all a piece of have seen on an CADKEY"6 cake! It even read a level that I had old re-run of finally saved National saved a hidden line Isometric view the day. It Geographic. I'm normally very on. However, it did not interpret a can save the slide file in .GIF sedate. filled part level correctly. Maybe format. Some conversion is still But it was worse than that! Let's the next revision? required to get the files compatible add a scanner, so we can print or The Main Menu options are File, with word handling programs, but plot our part file, and then scan it Edit, View, Scale, Levels, Options at least you do not have to be on back into the computer in a format and Help. On the File Menu, that is compatible with the word hallucinogenic drugs to get the Printer Setup and Exit are stan­ handling software. Oh, yeah! That results you expected. Better, but dard within the Windows environ-

54. KEY Solutions· June I July 1993 ment. I was surprised to see Half, Double and Window scale. Having raved about CADView's Portrait or Landscape print options. Auto, Half and Double scale work time saving qualities, let's talk The Edit Menu's one option, like they do in CADKEY. Window annoyances. Because I require Copy to ClipBoard, is your passport Scale functions like you're in CADKEY screen dumps and word to other applications. By copying to CADKEY, but the twist is you're handler compatible part files, I had the Windows ClipBoard any not. You window in on any section set my glorious technicolor CAD­ Windows-compatible word handler of the CADKEY part file and choose KEY to white background and black can use the part file. The options just a portion of the part while in geometric entities. Stop yawning! under the Copy to ClipBoard are CADView. Pretty slick, huh? When I brought my files into Image, which copies the graphic The Levels Menu is just a little CADView, they were gone. Not contents as a Bit Map Image; redundant. First you choose Levels, really. I just could not see them. Static, which copies the graphic then List to get a list of the CAD­ CADView defaults permanently to contents as a Windows Metafile KEY part file level descriptions. It a black background. I went into with a fixed size and the CADKEY and changed back to background color controlled by the default colors, went into the receiving application; each part file and changed the CADView lets you view, Scaleable, which copies the color attributes accordingly. It graphic contents as a Windows capture, import and was like hitting a 10 penny nail Metafile but with a fixed aspect manipulate part files. with a greasy ball peen ham­ ratio that will not let the file be mer. The 24-page owner's stretched out of shape; and booklet does not address this Stretchable which lets you indepen­ issue. dently stretch the height and width seems to me, if I were going to get I also feel the retail list cost is a of the Windows Metafile within the the levels list anyway, why choose little "pricey" at $495, but student receiving application software. twice? This is a minor gripe, as you discounts are available ($49.95 for can choose any level defined. These full time students and $99.00 for The View Menu allows you to do not have to be activated within schools) and quantity corporate select Standard Views or List the CADKEY. CADView filters the discounts are deep ($195.00). But views defined within the CADKEY entities for you. part file. This is very effective for overall, I was, as you can tell, very The Options Menu has two documentation, and lets the user pleased with the functionality of selections: Clipboard Colors As display and import those views for CADView. Black and Printer Colors As Black. complete understanding of what the For more information contact Both options force a white back­ part looks like. Information Technology Interna­ ground with black entities when tional at 203/644-2557. [J The four Scale options are Auto, used.

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CIRCLE CARD 242 June I July 1993 • KEY SOLUTIONS· 55 CADL TOOLBOX LONGNOTE.cdp

The LONGNOTE.cdx utility creates disk notes from files that are longer than the CADKEY disk note limit of r LONGNOTE,cdp ' GADL utilily to import disk notes bigger than t024 bytes ./ 1024 bytes. local double xt,yt,yofs,ang local inl nlines,linelen,nolenum,maxbytes,byteoounl,eof The standard way of placing a block local string $linesl~851 , $~9951 , $fname[601,$newline[21

of text in a CADKEY drawing is to :start create a file-note. During design, this approach allows for the note file to be xt=yt=yofs=ang=O nlines=linelen=notenum=byteoounl=eof=O updated with a preferred , maxbyteS=900 while all changes are automatically $newline='\n" $~OFO reflected in the CADKEY drawing close devin every time a REDRAW is performed. gelStr "LONGNOTE: Enter file name or ESC 10 end (%s)=>",$fname,$fname However, as soon as the drawing is ij (@key<=·2) completed and has to be archived, ex~

this feature becomes a disadvantage. sel devin,$fname,O The problem is that not all of the ~ (@error!=O) ( information which appears on the pause "LONGNOTE: Cannot open file %5 ",$fname CADKEY screen is actually goto start contained in the part file. At this stage it is a common error that the part file be archived or even sent out r gel positioo for note "/ getpos "LONGNOTE: Indicate note positioo",1 to a customer without the note file ij (@ keY <='2) attached to it. The result is data loss. goto start xt=@ xview The LONGNOTE utility imports yt= @yview large text files in CADKEY by ang= @noteangl3.1415926' 18O splitting them into individual notes sel collect,1 that are collected and positioned to form a single text block. The current while (eof == 0) { CADKEY parameters for text height, getkey rotation and line spacing are used by $li nesl~Ol =O the program to calculate and draw a input "%8O[Alnf,$lineslr r read a line of text (max 80 chars) '/ number of notes, each not exceeding if ((@error !=O) II (@key=27)) 900 bytes in length. For faster eof= 1 operation, the program reads the text file line by line. Lines longer input "o/,'l[1nf r skip the In character (~any) '/ than 80 characters are wrapped prompt "NOTE %d (%d)=> %5' ,notenum+ 1, bytecount,$linestr

around the 80 character limit. call strcat,$linestr,$newiine Before execution, the program code call strten,$linestr,lineien has to be compiled to a binary ~ ((bytecount+linelen < maxbytes) && (eof = 0)) ( executable CADL file. To run - select r add the line to the current text note '/ FILES:CADL:BINEXEC and enter byteoount=byteoounl+linelen call strcat,$I,$linestr LONGNOTE. At the prompt, enter nlines=nlines+ 1 the full name of the text file and j indicate the note's position. On the else ( prompt line, the number of r create the current text note '/ individual notes, the size of each note nole xt=xt+yofs'sin(ang),yt=yt'yofs'cos(angj,$t,ang notenum=notenum+ 1 and the current line of text being input will be displayed. A new text r add line to the next note and calculale offsets '/ $~Ol=O note is created at every 900 bytes call strcat,$t,$linestr read. Press ESCAPE if you wish to yots=nlines'@noloot'(I+@noleline) nlineS=l interrupt the input. The program bytecount=O will then display the last text note and restart itself. set collect, 0 prompt "LONGNOTE: File %s is spl~ into %d note(s)",$fname,notenum wa~ 1 by Chavdar Popov goto start Telephone: (U.K.) 0495 350503 work (U.K.) 0495 308634 home

56. KEY Solutions· June / July 1993 N eed full-featured parametric solid and surface modeling?

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SPARCard is li censed exclusively to Opus Systems, S o instead of sacrificing your PC for SPARC, SPARC your Pc. and is a trademark of SPARe International, lnc. US. 0 Patent Pending. Cadkey is a trademark of Cadkey, Give us a call at 408 562-9340, ext. 400. Inc. Microsoft and Word are trademarks of Microsoft Corporation. Time Line is a trademark of Symantec Corporation.

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ORNER

by Steve Falusi IfCAD KEY were installed in getting an ''insufficient memory" C:\ CADKEY and Windows in message from Windows. Though CADKEY6is nota Win­ C:\ WINDOWS, theDOScommand Match the information in Fig. land dowsapplication, it can be launched would be: choose FILES-SAVEAS and save as from Windows 3.1 as a DOS full screen COpy C : \ CADKEY \ PHARLAP . 386 C : \ WINDOWS CADKEY.PIF. application. This allows you to work with CAD KEY and many of your Windows 3. EdittheWmdowsINI ------_------, a applications at the same time. Under file toreflectnew device file Mode fjelp specific setups (resolutions), you can also driver frogram Filename: ~I CAD=K=E=Y=. EXE======l_---' share the clip board for cutting and Assumingthat Windows Window Iitle: I Cadkey ver 6 ~======~--, pastingimages. isinstalledin Qptional Parameters:

However, setting up to launch C:\ WINDOWS, the next lI.tart-up Directory: IL: C~:\=CAD.:::.:.:KE=-Y~ ______--, CAD KEY under Windows requires a command would be: ~ideo lo4emory. ® Text 0 Low Graphics o High Graphics strongunderstandingandworking EDIT C : \ WINDOWS \ SYSTEM . INI lo4emory Requirements: KB Required ~ KB llesired ~ knowledge ofDOS, memory manage­ EIo4S lo4emory: KB Required ~ KBUmit ~ ment, system configuration and Win­ Use the arrow keys to scroll down the file until XIo4S lo4emory. KB Relluired ~ KBlirnit ~ dows. Ifyou have this, you shouldn't you reach the [386 Enh] Display Usage: ® FJjJI Screen Execution: 0 Il.ackground have any difficulty with the following OW.indowed f1cclusive section of the system.ini o steps. Ifyou 're not sure, get help. [gJ klose Window on Exit Advanced ... file. Then insert the line: [Press F1 for Help on XMS Memory. Initial Setup DEVICE=PHARLAP . 386 (Fig. 1) There are five basic steps to setup SavethefileandexittoDOS. your system to launch CADKEY under Windows. The first three are performed In Windows 5. SetupaWmdowsProgram inDOS; the others, in Windows. Group, Propertiesandlcon. 4. Create anew .PIFfile Program Group: Choose FILE-NEW In DOS Start Windows, enter the Main from the top of the Program Manager and 1. Installandconfigure window and double-click on the PIF choose the Program group option. (See CADKEY6 editor icon. PIF stands for program Fig. 2) This is covered in the Getting Started information file, and tells Windows how Manual. Make sureyoucanenter much memory to give to the application CADKEYbytypingCADKEY.exe it's executing. The -1 option tells Windows to give CADKEY as much Il.•• ctiption: ~1 ~=KfY=vo='=6======11 ~ at the CAD KEY root level. SiroupFila: I ~ memory as it can. Ifyou plan to run a 2. CopyPHARIAP.386fromthe number ofother applications including ~ CADKEY rootdirectorytothe CADKEY, enterthemfirstand then enter Wmdowsrootdirectory (Fig. 2) CADKEY. This will keep you from

64 • KEY Solutions' June I July 1993 I Icon Creation: The next step is to simply exit Windows, Windows create the CADKEYicon and point to won't know how to restore your TECH TIPS screen and your display will be thePIFfile. Choose the NEW PRO­ Here's a grab bag of tips to make using GRAM -ITEM option from the Program unreadable. There is also a problem CADKEYa little easier. This batch is from Manager Menu. (See Fig. 3) with Windows with video cards with Dana Seero of Computer-Aided Products, a graphics co-processors. Again, Cadkey VAR in Marblehead, MA. this confuses Windows so that UNDO/DELETE Il.esaiption: I Cadkeyvor 6 C: \CAOKEY\CADKEY.EXE most of the time it is unable to .command Una : I """eel CAD KEY features a repeat undelete Working Directory: :iiI C§: \CAD~K=EY====~ feature. If you delete something by mistake, 8Jows • ... restore the graphics display. S hortcut Key: INone select CONTROL-U and the entity will I Change lcon... You may be able to launch o B un MinimiJ:ed reappear. Continue to select CONTROL-U to Help CADKEY at a higher resolu­ undelete additional entities. You can also (Fig. 3) tion, but Windows probably retrieve entities through the menu by won't be able to restore the selecting EDIT RECALL ALL-DISPL BY­ TYPE, and select the choices you want. Ifall was successful, you should have display. a program icon that looks like the one • Any other graphics TSR (termi­ The "UNDO" command EDIT RECALL below. (See Fig. 4) nate and stay resident) programs LAST will recover the last eight entities you've deleted--keep selecting LAST. may conflict with CADKEYlWin­ dows. MACROS • Windows version 3.0 has many You can save units, window, scale, view, memory management bugs and depth, and entity and text attributes with a CADKEY is not supported under macro. Turn on the keystroke recorder by pressing CONTROL-J, and typing in a macro Cad key this version. name (such as Settings). The RECORD ver6 • Launching CAD KEY under message will appear in the upper left hand Windows is not supported on any corner, above the menus. Press ESC twice to clear the menus, then select the default other operating system than DOS settings you want. Close the macro by typing 5.0. CONTROL-J. To run the macro, type CONTROL-E, and type in the macro name. (Fig. 4) • If you can't enter CADKEY from DOS by typing CADKEY.EXE from Macro binding is case sensitive (i.e., Memory, Resolution, Etc. the CADKEY directory, you will not "Macro 1" is different from MACRO 1 ") If the • Memory should be a minimum of be able to enter CADKEY from system can't find the macro, check to see if your CAPS LOCK key is set. 12 MB, though 16 MB or higher is Windows. Make sure you load your mouse and CADKEY video driver recommended. The HIMEM.SYS You can make a macro that uses file shipped with Windows 3.1 will before entering Windows. parametric design by specifying variables recognize a system with greater • For greater graphics speed inside instead of numeric values. Or, if you have made a macro with specific values and want than 16 megabytes which will help Windows, enter CADKEY using the to make it parametric, do FILES-MACROS­ CADKEY run better under Windows. MS-DOS prompt Icon, change to the LIBRARY-TEXT OUT. Then use a text editor CADKEY subdirectory and type and replace the specific values with variables. • Configure all your memory as Use TEXT IN , and define a new macro name. expanded memory (or at least 12 CADKEY.EXE. This method is unsupported, however it increases ME) to run CADKEY under Windows. AUTOMATIC SPHERES the apparent graphics speed of • Do not attempt to run CADKEY You can automatically make a Sphere in at a higher resolution than Win­ CADKEY under Windows. CADKEY, either as polygons or splines. dows (i.e., don't run CADKEY at • Using the clip board to capture (Polygons process readily through SOLIDS; Splines are more accurate.) Use CREATE 800x600 and Windows at 640x480). CADKEY images is only supported POLYGON MESH SPHERE, or CREATE In addition, maximum CADKEY if Windows is running in enhanced SPLINE MESH SPHERE to create these resolution of 800x600x256 is not mode. You can determine this by shapes. supported. Running any DOS choosing HELP-ABOUT PROGRAM application at higher than standard MANAGER from the Program COLOR & PEN PLOTTERS resolution (standard = 640x480x16 Manager Menu to display the status You can use a single pen plotter to make or 800x600x16) can cause problems dialog box. multi-color drawings by changing the plotter in Windows. This is because Win­ • If you are using CADKEY Vibrant setup. Go into CON FIG , and select plotter options. Scroll through the selections until you dows screen grabbers (* .gb3s) don't drivers and are running under get to the selection for pen color. Select understand the higher resolutions. Windows, the only resolution PAUSE FOR PEN CHANGE, and SORT BY If you attempt to switch tasks or supported is Generic VGA. I:l PEN #. This will allow you to plot all pen 1, then pen 2, etc.

June I July 1993' KEY Solutions' 65 CATEGORY CODES:

A ADD-ONS/ACCELERATOR BOARDS M MONITORS S SERVICE BUREAUS C COMPUTERS/SYSTEMS MCMISC. COMPONENTS SW SOFTWARE CA CAM/HARDWARE N NETWORKS SA SOFTWARE: AEC/CIVIL/STRUCTURAL CN CONSULTANTS o OFFICE SUPPLIES/FURNITURE SM SOFTWARE: ME/CAM/CIM E EDUCATION/PUBLICATIONS P PRINTERS/PLOTTERS ST STEREO LITHOGRAPHY /RAPID PROTOTYPING G GRAPHICS BOARDS Q SALES/SERVICES U UNIX I INPUT DEVICES SC SCANNERS

PG .• COMPANY CATEGORY RS.

68 ACCESS TECHNOLOGIES P,Q,S,SC ,SW 219 29 ALTRA I 279 28 APPLIED PRODUCTION , INC. SW,SM 275 28 ARCDRAFT AMERICA SW 245 BC BAYSTATE TECHNOLOGIES SW,SM 246 22 BAYSTATE TECHNOLOGIES/BILL OF MATERIAL SW,SM 247 41 CADKEY C,E,Q,S,SW 202 10 CADKEY TRAINING SEMINAR C,E ,Q,S,SW 254 51 CAD PRO CHICAGO, INC. SW 224 47 CADTECH SYSTEMS SW 249 39 CAD WAREHOUSE M,P,G,I 243 3 CIMMETRY SYSTEMS, INC. SW 268 52 CIM SOLUTIONS & NETWORKING E 265 69 COMPU-SOLUTIONS SW,SM 264 68 COMPUTER-AIDED PRODUCTS E 271 69 CONSULTING SERVICES INTERNATIONAL CN ,SW 261 69 CONSULTING SERVICES INTERNATIONAL CN ,SW 282 69 DIGITAL RESOURCES, INC. I,P 223 23 EMJ DATA SYSTEMS LTD. A,C,G,I,M,N,P,SW,Q 276 53 ENCAD P 201 47 FAR MOUNTAIN CORP. P 238 19 FARO TECHNOLOGIES, INC. I 208 60-63 FASTSURF SM 207 40 GLENN HOWDEN CO. 0 269 58 HLB TECHNOLOGY, INC. I,SW 205 59 HLB TECHNOLOGY, INC. I,SW 250 39 INFORMATION TECH . INT'L. CORP. SW 257 68 INNOVATIVE DESIGN CONSULTANTS CN ,I 237 27 ITAC SYSTEMS I 278 IFC KURTA I 239 34, 35 LOGITECH ,INC. I 280 7 LUNAR GRAPHICS, INC. SW,SA,SM 235 69 MECHTECH SOLUTIONS, INC. CN ,S,SM 221 68 MICROCOMPUTER EDUCATION SYSTEMS E 277 69 MOSCHENROSS CONSULTING CN ,Q 272 45 MOUSTRAK, INC I 283 57 OPUS A 259 55 PARADESIGN SM 242 25 PROHANCE TECHNOLOGIES, INC. I, SW 206 26 QUALITY CAD I 209 12 ROLAND DIGITAL CA 281 68 SOFTWARE VENTURES, INC. SW 226 37 SURFWARE ,INC. I 68 TECHNICAL & SCIENTIFIC APPLICATION , INC. A,C,M,P,Q 227 15 3D SYSTEMS, INC. ST 273 15 3D SYSTEMS, INC. ST 274 71 TRI STAR COMPUTER CORP. C 270 67 UNITEC SW 266 6 XI COMPUTER C 256

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June I July 1993 • KEY Solutions. 69 KEY MAIL ======1 Platform Concerns Your article (Selecting a CAD Platform, by Kenneth ment for that complex-instruction DOS dinosaur. Billing, FeblMarch issue) may have been "on target" But a user-friendly and efficient one we can all love. regarding DOS and its hardware platforms, but your One that lets me send my CAD file to someone inferences are the kind which has cost me a three-year without having to first ask what brand of computer bet on the merging of computer compatibility. Your (or GUI) he is running, even when he is using the conclusion that investing in a DOS system to run CAD same brand of CAD application. I'd like to win the applications "because there are too many to become technology bet the next time. obsolete" runs counter to encouraging computer users to apply market pressure needed to achieve more c. P., Ijamsville, MD productive graphic system compatibility between their offerings. It's About Time You also failed to recognize the contribution of the I was pleasantly surprised to receive a copy of Macintosh: the alternative created to run graphics ... KEVSOLUTIONS recently. I can only describe it as first Without the growing and enthusiastic Macintosh user class. It is about time we had a CADKEY magazine influence, your favorite CAD-on-a-PC system would similar to MICROSTATION MANAGER or CA­ today still be only capable of drawing "stick figures" on DENCE. I found it most useful and informative and monitors designed for character display resolution. The look forward to the next issue. I trust it will not be down side is that while the Mac is friendlier than too long before you go monthly. Since our last UNIX and much more capable at running CAD than telephone conversation I have become a Registered DOS, it introduced yet another box to port that CAD User of CAD KEY and eagerly await Version 6 to package to. And another set of filters to write. arrive in South Africa. I wish you and your col­ So in your next article, do us consumers the favor leagues success with the new magazine. of encouraging Apple, Big Blue, and the several UNIX houses to cooperate in developing a suitable replace- S. G. M. , Johannesburg, South Africa

BOOK REVIEW by Jack Bilderback, CPIM CAD KEY User Group News Please send all material to: Concurrent Engineering: The Product Development Environment for the 1990's User Group Editor KEVSOLUTIONS P.O. Box 11978 This interesting treatise on today's development processes; 2) the Spokane, WA 99211-1978 pursuasively promotes CE as the four key dimensions of the CE environ­ necessary vehicle to competitiveness in ment; 3) an Assessment Tool, provided the ultra-competitive '90's. for purposes of benchmarking one's The authors, Donald E. Carter, a relative position to world-class organiza­ Technical Director at Mentor Graphics, tions; and 4) the transition to an and Barbara Stillwell Baker, a freelance effectively automated environment. writer, write from real-world experience The glossary of CE terminology and in the highly dynamic electronic design abbreviations is not limited to engineer­ industry, but the ideas are applicable to ing or technical types. The resource a wide range of products. listing is extensive and well organized, The text is concise, direct, and covering every subject related to state-of­ • comprehensive, aimed at "decision the-art theory and practice. On this level makers" and "managers of change." It alone the book provides value. progresses logically and smoothly from While the introduction sets the stage Please note the following an introduction of concurrent well, there is, however, no final summary correction to the April/May engineering's first beginnings through or conclusion. The last chapter ends issue of KEVSOLUTIONS: the process of synchronizing and rather abruptly, leading directly into the The phone number on the ultimately automating the development Appendices which provide more complete qSHEET ad for Consulting environment. Assessment Tool information. Perhaps a Services International, found Most importantly, it is consistent small fault to find in what is otherwise a on page 59 of Solution Mart, with and incorporates the wisdom of worthy effort. was printed incorrectly. many recognized experts in the fields of The book retails for $36.95 and is The correct phone number marketing, technology, quality, manufac­ published by Addison-Wesley Publishing turing, and finance. The book is divided Co. , One Jacob Way, Reading, MA 01867; is 818/994-8881. into four sections: 1) change and its effect 617/944-3700 (ISBN 0-201-56349-5).

70. KEX Solutions· June I July 1993 INTEL 486 PROCESSOR INTEL 486 PROCESSOR 8MB RAM 8MB RAM 128K WRITE-BACK CACHE 128K WRITE-BACK CACHE TRUE 32-BIT VL-BUS IDE VL-BUS IDE CACHE CONTROLLER CONTROLLER WITH 2MB RAM VL-B US ACCELERATOR CARD WITH VL-BUS ACC ELERATOR CARD WITH 1MB RAM 1MB RAM 17" FLAT SQUARE EDGE TO EDGE 17" FLAT SQUARE EDGE TO EDGE SVGA MONITOR SVGA MONITOR 250MB 13ms IDE HARD DRIVE 340MB 13ms IDE HARD DRIVE TEAC 1.2MB & 1.44MB FLOPPY TEAC 1.2MB & 1.44MB FLOPPY DRIVES DRIVES MICROSOFT WINDOWS 3.1 & MICROSOFT WINDOWS 3.1 & DOS 6.0 DOS 6.0 TOWER CHASSIS WITH TOWER CHASSIS WITH DUAL COOLING FANS DUAL COOLING FANS 101-KEYBOARD 101-KEYBOARD 12" X 12" DIGITIZER WITH 12" X 12" DIGITIZER WITH CORDLESS PUCK CORDLESS PUCK DX-33 DX-33 $3309 $3759 DX2-66 DX2 -66 $3649 $4099 DUAL REMOVABLE 170MB DUAL REMOVABLE 255MB HD UPGRADE $235 HD UPGRADE $265 DUAL REMOVABLE 250MB DUAL REMOVABLE 340MB HD UPGRADE $435 HD UPGRADE $665

For over five years Tri-Star has been satisfying the appetites of the most demanding power-hungry CAD professionals. So far in 1993 alone our computers have won two Editor's Pick awards from Windows Sources and a Best Buy award from PC World In a review against Compaq, ASTand Gateway, PC Week called Tri-CAD, "... the best value of the systems that cost more than $4000." Tri-Star now ranks among the industry's best in PC Magazine's annual survey of service and reliability.

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