Making Stub-Tenon Doors
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Practical Implementation of the Stream Function Method for Design of Arbitrary-Geometry Gradient Coils
Practical Implementation of the Stream Function Method for Design of Arbitrary-Geometry Gradient Coils R. A. Lemdiasov1, R. Ludwig2 1Insight Neuroimaging Systems, Worcester, MA, United States, 2ECE Department, Worcester Polytechnic Institute, Worcester, MA, United States Introduction Over the past several years a variety of theoretical design methods for the construction of gradient coils have been developed. For instance, in [1] D. Green et al. minimize a weighted combination of power, inductance, and the square difference between actual and desired field. Representing the current as a Fourier series they find optimal coefficients that minimize the cost function. Our work is a continuation of last year’s research reported in [2]. In this paper we describe an alternative implementation of a stream function method to design gradient coils. Using this method we are able to determine the current distribution to achieve a prescribed magnetic field distribution in the Region of Interest (ROI) that is largely independent of the shape of the current-carrying surface. We will demonstrate the successful implementation of our approach as well as experimental results. Theory As mentioned above, a cost function Φ can be introduced in the form K Φ = 1 ()() ()− ()+ 2 +α ∑W rk Bz rk Bdes,z rk Boff ,z Wmagn (1) 2 k =1 () () where W r is a weight function, BZ is the z-component of the total field, Bdes,z r as well as Boff,z are the z-components of the desired and offset magnetic field, and α Wmagn is magnetic energy with being a weight coefficient. In (1), the first term denotes the square deviation of the magnetic field from the prescribed field, and the second term is the magnetic energy of the coil. -
Twin-Blade Joinery the Fast Way to Make Perfect Tenons and Tongues on the Tablesaw
Twin-Blade Joinery The fast way to make perfect tenons and tongues on the tablesaw By Paul Anthony Joinery is probably the most exacting aspect of woodworking. It’s where stock around on your tenon jig to saw the thousandths of an inch matter. No kidding. oppositecut tenons cheek. is to sawThe oneproblem cheek, with then this flip is the that If a tenon, for example, is even .004" (the any inconsistency in your stock thickness thickness of a dollar bill) thinner than translates into inconsistency in your tenon its mating mortise, the joint’s strength thickness. As you’ll see, twin-blade joinery has been compromised, no matter how solves this problem, eliminating the need to well glue appears to hold it together. Because cutting joints can be fussy and The technique is just as effective at cutting time-consuming, it makes sense to take accuratefine-tune tongues the tenon on thickness panel edges for forfinal the fitting. same reason. Although a different principle This is where twin-blade joinery comes applies, twin-blade joinery is also the perfect in.advantage By stacking of any two efficiencies identical blades where together, you can. approach to cutting double spline slots. you can reduce the time it takes to cut tenons, All the technique requires is two identical tongues, and other joints with parallel saw blades and some shop-made spacers. faces. At the same time, you’re ensuring The small expense pays off big time, as accuracy. For example, a common way to you’ll find once you try the method. -
Types of Tap
Types of Tap HAND TAPS ISO 529 These are straight flute general purpose tools which can be used for both machine or hand tapping. They are generally the most economical tool for use on production runs, but are best on materials that produce chips, or where the swarf breaks readily. Where deep holes are to be tapped, in materials which produce stringy swarf, serial taps may be needed, especially for coarse threads. ISO 529 hand taps can be supplied in sets of three; bottom, second and taper leads, or individually. BOTTOM TAPS have a chamfer (lead) of 1–2 threads, the angle of the lead being around 18 degrees per side. They are used to produce threads close to the bottom of blind holes. SECOND TAPS have a lead of 3-5 threads at 8 degrees per side. They are the most popular and can be used for through holes, or blind holes where the thread does not need to go right to the bottom. TAPER TAPS have a lead of 7-10 threads at 5 degrees per side. The taper lead distributes the cutting force over a large area, and the taper shape helps the thread to start. They can therefore be used to start a thread prior to use of second or bottom leads, or for through holes. IMPORTANT NOTE ON TERMINOLOGY! In the U.K. bottom taps are often referred to as ‘plugs’. In North America second taps are often referred to as ‘plugs’! This can easily lead to confusion. To avoid problems when ordering it is best to use the terms bottom, second and taper. -
What's a Dado Anyway?
What’s A Dado Anyway? hen we first found the thing back The dado found on Nikumaroro has a Win 1989 we took it to be the cover number of features which make it particularly of some kind of box. Although it didn’t interesting: look much like an airplane part it was, 1. Although evidently used in what appeared at least, made of aluminum and, at the to be the village’s carpentry shop as a sur- Research In Progress Research In Progress Research In Progress end of a grueling expedition which had face to hammer upon, it was never cut apart, found little else, that was good enough. broken or even seriously bent. Alone among In the catalogue of artifacts from NIKU I, acces- the various pieces of aircraft debris found sion number 2-18 is described as “aluminum on the island to date, 2-18 is a complete plate with riveted bands on edges; part of box?” structure, and yet nowhere does it carry a found at “Karaka village, Ritiati, structure 17 part number. (carpenter’s shop?).” After six years of research 2. Identical pry marks at each of the holes we’re now able to provide a somewhat better in the right angle bend suggest that it was description. originally attached with nails to wooden TIGHAR Artifact 2-18 is a structure known flooring. in aviation parlance as a “dado.” An internal fixture rather than part of the airframe, a dado 3. Several modifications made to the structure is a panel (often insulated) which covers and suggest that it was installed in a different protects the juncture of the aircraft’s cabin location and served a slightly different flooring and the fabric-covered interior wall. -
Product Data
PRODUCT DATA Date: 20 March 2005 Information Sheet No.: ZE0197 EVO-STIK WOOD ADHESIVE WEATHERPROOF CROSSLINKING PVA ADHESIVE Evo-Stik Wood Adhesive Weatherproof is a one part water-resistant synthetic resin emulsion adhesive for general bonding of wood assemblies for non-structural applications. It has suitable properties for internal use and for protected external use. Evo-Stik Wood Adhesive Weatherproof is non-flammable, freeze/thaw stable, dries translucent, and meets EN 204 D3 & BS 4071: 1966 that the wet adhesive is carried into the socket MATERIALS BONDED/APPLICATIONS when assembly takes place. Wood which has Evo-Stik Wood Adhesive Weatherproof may be been stored in a cold or humid environment used for the assembly of frames for doors, should be allowed to condition in the workshop windows, drawers, etc. It is suitable for making atmosphere before bonding. mortice and tenon, dowelled, and other standard woodworking joints. It is also suitable for bonding 3. Assemble the parts while the adhesive wood veneers and laminated plastics to wood or film is still wet. The maximum open assembly chipboard cores. time depends on the substrate porosity and ambient temperature, but generally falls within Evo-Stik Wood Adhesive Weatherproof may also the range of 10 to 25 minutes. be used for bonding other materials such as rigid PVC or aluminium edge trim sections to 4. When the parts have been assembled, recessed wood for internal use. maintain light pressure on the bond line during the initial setting period, using equipment such as NOTE: It is unsuitable for assemblies vices, jigs, clamps. Dead loads may be used but continuously immersed in water, and applications are less efficient that clamping devices. -
View the Door Catalog
Roy’s Wood Products OVER 45 YEARS OF CUSTOM WOODWORKING A passion for quality and almost 50 years of custom woodworking drives Roy’s Wood Products, RWP, to manufacture some of the best wood products in the industry. Our grandfather Roy Brazell, Sr., after serving in WWII, started building cabinets and other products for local craftsmen and contractors. His son, Roy Brazell, Jr. continued to grow the business by focusing on what the customer needed and working hard for timely delivery. As a result of hard work, attention to quality, and the blessings of our Lord and Savior Jesus Christ, RWP has grown into what it is today. We are looking forward to providing you with the custom cabinet doors, custom mouldings, hardwood flooring or any other products you might find in the pages of this catalog. Thank you for your business. Cherry Roman Eyebrow Roman Arch Square Raised Panel DFT-01-202-110 011-01-202-110 005-01-202-110 003-01-202-110 401-00-000-110 402-00-000-110 Maple Double American American Arch Square Raised Panel DFT-03-203-113 015-03-203-113 010-03-203-113 003-03-203-113 401-00-000-113 403-00-000-113 Hickory PICTURED: Cathedral Eyebrow Cathedral Arch Square Raised Panel DFT-01-209-109 Square Raised Panel Door 003-01-202-110 008-01-209-109 004-01-209-109 003-01-209-109 401-00-000-109 Solid Raised Panel Drawer Front 502-00-000-110 509-00-000-109 In Cherry with stain 4 5 Birch DFT-01-FPL-110 Glass Four Lite Flat Roman Classic Flat 409-00-000-110 003-03-G04-111 905-01-FPL-110 903-01-FPL-110 401-00-000-110 Knotty Pine DFT-03-FPL-107 Flat -
Combination Frame and Panel Cabinet Doors
Cabinet Doors & Drawer Fronts Combination Frame & Panel B Section View of Top Rail for #1616 Door Raised Panel Style: 1616 Style: 4016 Section View of Top Rail for #1618 Door - ⅜" Dowels Face of Door SR100 ⅜" Diam. Dowels Section View of Stile for #1618 Door - ⅜" Dowels Face of Door SR100 ⅝" Diam. Dowels Section View of Top Rail for #1618 Door - ⅝" Dowels Raised Flat Face of Door Panel Panel SR100 Section View of Stile for #1618 Door - ⅝" Dowels Style: 1618 Style: 4018 Face of Door SR100 ** Please fax or e-mail your rough draft or CAD drawings to Customer Support for your manufacturing and quote needs. ** ► For PRICING ► See Section B13 in our Wholesale Pricing Catalog. ® ® B13-1 (Phone) 1-800-237-1326 6:00AM - 4:30PM CST (24 Hour Fax) 1-608-781-3667 V15.2 .com C Combination Frame & Panel Cabinet Doors & Drawer Fronts B ⅜" Thick Slats Section View of Top Rail for #1617 Door ¾" Thick Section View of Top Rail for #1617 Door Slats Raised Panel Style: 1617 Style: 4017 ** Please fax or e-mail your rough draft or CAD drawings to Customer Support for your manufacturing and quote needs. ** Combination Frame and Panel Door Notes 1) Pricing A price quote will be provided for your approval before beginning the manufacturing process. These doors can be ordered with raised or reversed center panels in solid wood & raw MDF or with 2) Center Panel flat center panels in ¼" wood veneer & ¼" raw MDF. Mullions or a Lite Pattern are optional in the Frame Only section. Any “Traditional”, “Old World” or “Mitered” stile and rail profile can be used, some profilesmay not be compatible for use with mullions or Lite Pattern options. -
Book-Matching Legs 1 Diagonally Opposed Legs
Tips & Tricks Switch location of Rotate remaining Book-matching legs 1 diagonally opposed legs. 2 legs 180°. When making a project with four square legs, such as the jewelry chest on page Use riftsawn stock 36, a nice visual touch is to configure the (with diagonal annular rings). legs to display book-matched grain when viewed from any side of the piece. Here’s how to do it: Begin with a square piece of riftsawn stock the length of the legs. It Triangle reference should be twice the thickness of a finished mark leg, plus about 1/4". Draw a triangle on one end, and then rip the piece into quarters to make four individual leg blanks. Using Book-matched Book-matched the triangle as a reference, reconstitute the faces faces pieces back into their original order, and number the ends as shown. Then switch the position of two diagonally placed legs, Share a Slick Tip. Win Cash or a Prize! and rotate the remaining two legs 180°. Awards Send your ideas to: Top Tip award: $250 Woodcraft Gift Card Tips & Tricks, Woodcraft Magazine, Maintaining this relationship of the legs Published illustrated tip: $125 P.O. Box 7020, Parkersburg, WV 26102-7020 on the project will create book-matched Published non-illustrated tip $75 or visit woodcraftmagazine.com and click “contact”. leg grain on each face of the piece. Important: Please include your phone number, as an editor may need to call you if your trick —Geoffrey Noden, Trenton, New Jersey is considered for publication. Published tips become the property of Woodcraft Magazine. -
Dado & Accessories
20-73 pages 8-28-06 8/30/06 11:21 AM Page 63 Dado Sets & Saw Blade Accessories Dado Sets 63 Whether you’re a skilled professional or a weekend hobbiest, Freud has a dado for you. The SD608, Freud’s Dial-A-Width Dado, has a patented dial system for easy and precise adjustments while offering extremely accurate cuts. The SD300 Series adds a level of safety not found in other manufacturers’ dadoes, while the SD200 Series provides the quality of cuts you expect from Freud, at an attractive price. 20-73 pages 8-28-06 8/30/06 11:21 AM Page 64 Dial-A-Width Stacked Dado Sets NOT A 1 Loosen SD600 WOBBLE Series DADO! 2 Turn The Dial 3 Tighten Features TiCo™ High Dado Cutter Heads Density Carbide Crosscutting Blend For Maximum Performance Chip Free Dadoes In Veneered Plywoods and Laminates The Dial-A-Width Dado set performs like a stacked dado, but Recommended Use & Cut Quality we have replaced the shims with a patented dial system and HARDWOOD: with our exclusive Dial hub, ensures accurate adjustments. SOFTWOOD: Each “click” of the dial adjusts the blade by .004". The Dial- A-Width dado set is easy to use, and very precise. For the CHIP BOARD: serious woodworker, there’s nothing better. PLYWOOD: • Adjusts in .004" increments. 64 LAMINATE: • Maximum 29/32" cut width. NON-FERROUS: • Adjusts easily to right or left operating machines. • Set includes 2 outside blades, 5 chippers, wrench and Application CUT QUALITY: carrying case. (Not recommended for ferrous metals or masonry) • Does not need shims. -
Learner Support Material: Civil Technology Woodworking: Grade 11
EC - LEARNER SUPPORT MATERIAL: CIVIL TECHNOLOGY WOODWORKING: GRADE 11 CONTENT TO BE COVERED: TOPICS: 1. JOINING (Generic) + (SPECIFIC) Identify and explain the use of: • Bolts and nuts • Rawl bolts • Plastic plugs • Rawl plugs Methods of joining the following items: Alternate methods of fixing window panes onto casement members and fixed frames. Application, uses and drawings of the following woodworking joints (exploded and assembled views): • Haunched mortise and tenon joint • Twin mortice and tenon joint • Double bare face tenon 2. CASEMENT (Specific) Sketch of vertical section through the transom, bottom rail of fanlight and top rail of casement with glass and putty in position Identification of parts and the drawing of the external elevation of a double casement with fanlights and two horizontal glazing bars in the casement within a frame 3. DOORS(Specific) External doors: Application, drawing of front elevations, horizontal and vertical sections and constructional details of the following doors: • Three panel door with raised and fielded panels with high lock rail • Four panel door with low lock rail, raised panels and diminishing stile • Framed ledge, brace batten doors with lock and bottom rails 22 mm thick Application, drawing of front elevations, horizontal and vertical sections and constructional details of an entrance door with a shaped top rail and fixed sidelights within a frame. Sketches showing differentiation between a door frame and jamb lining 4. WALL PANELLING AND CUPBOARDS (Specific) a) Front elevation and vertical section showing methods of installing strip boards (tongue and groove boards) as wall panelling from floor to ceiling. b) A horizontal section showing how the joint between two strip boards are joined. -
The Complete Illustrated Guide to Shaping Wood / Lonnie Bird
The COMPLETE ILLUSTRATED Guide to ShapingWood LONNIE BIRD ➤ Squares, Circles, and Ellipses ➤ Edge Treatments and Moldings ➤ Coves, Reeds, and Flutes ➤ Bent and Laminated Curves ➤ Turned and Carved Shapes The COMPLETE ILLUSTRATED Guide to ShapingWood TJ51-1-2008 IMUS 7/UOA0069-Shaping Wood W:9.25”xH:10.875” Wood TJ51-1-2008 IMUS 7/UOA0069-Shaping 175L EX 128White A M/A(D) The COMPLETE ILLUSTRATED Guide to ShapingWood LONNIE B IRD t TJ51-1-2008 IMUS 7/UOA0069-Shaping Wood W:9.25”xH:10.875” Wood TJ51-1-2008 IMUS 7/UOA0069-Shaping 175L EX 128White A M/A Magenta(D) Text © 2001 by Lonnie Bird Photographs © 2001 by Lonnie Bird Illustrations © 2001 by The Taunton Press, Inc. All rights reserved. Pp The Taunton Press, Inc., 63 South Main Street, PO Box 5506, Newtown, CT 06470-5506 e-mail: [email protected] DESIGN: Lori Wendin LAYOU T: Suzi Yannes ILLUSTRATOR: Mario Ferro PHOTOGRAPHER: Lonnie Bird LIBRARY OF CONGRESS CATALOGING-IN-PUBLICATION DATA: Bird, Lonnie. The complete illustrated guide to shaping wood / Lonnie Bird. p. cm. Includes index. ISBN-13: 978-1-56158-400-0 ISBN-10: 1-56158-400-2 1. Woodwork. I. Title. TT180 .B57 2001 TJ51-1-2008 IMUS 7/UOA0069-Shaping Wood W:9.25”xH:10.875” Wood TJ51-1-2008 IMUS 7/UOA0069-Shaping 175L EX 128White A M/A Magenta(D) 684’.08--dc21 2001027430 Printed in Thailand 1098765 About Your Safety: Working with wood is inherently dangerous. Using hand or power tools improperly or ignoring safety practices can lead to permanent injury or even death. -
Carpentry, Culinary Arts Instructor Guide and Curriculums. Bilingual Vocational Education Program
DOCUMENT RESUME ED 288 104 CE 049 167 AUTHOR Densmore, Roxanne T. TITLE Carpentry, Culinary Arts Instructor Guide and Curriculums. Bilingual Vocational Education Program. INSTITUTION Crownpoint Inst. of Technology, NM. SPONS AGENCY Office of Vocational and Adult Education (ED), Washington, DC. PUB DATE 87 GRANT G008620033 NOTE 369p. PUB TYPE Guides Classroom Use Guides (For Teachers) (052) EDRS PRICE MF01/PC15 Plus Postage. DESCRIPTORS *American Indian Education; Behavioral Objectives; *Bilingual Education; *Carpentry; Competency Based Education; *Cooking Instruction; Language Skills; Learning Activities; Lesson Plans; Mathematics Skills; Occupational Home Economics; Student Evaluation; Student Placement; Trade and Industrial Education; *Vocational English (Second Language) IDENTIFIERS *Navajo (Nation) ABSTRACT This guide is intended to assist vocational English as a second language (VESL) instructors in teaching courses in carpentry and the culinary arts to residents of Navajo reservations. The first section outlines the rationale and content of the two training programs as well as the basic VESL objectives that they seek to address. The next section, a VESL learning guide, discusses the main principles of the ESL method, learning characteristics of ESL students, the ESL learning environment, curriculum development, teaching techniques (including survival and competency-based methods, the notional-functional approach, use of the world outside the classroom, and total physical response), student assessment, and placement levels. Educational goals and curriculum design are covered next. The carpentry curriculum includes 25 units that are intended to provide students with hands-on and classroom instruction in the identification, proper handling, care, and maintenance of trade tools and equipment; the fundamental processes and techniques of the carpentry trade; applicable codes and safety practices; and blueprint reading and job estimation techniques.