DOCSLIB.ORG

Z 810 Color 3D Printer User Manual

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Z 810 Color 3D Printer User Manual Z810 System User Manual January 2004 Z®810 Color 3D Printer User Manual Copyright © 2002-2004 Z Corporation Rev. F, Part Number 09505 Z Corporation Z810 System User Manual TABLE OF CONTENTS 1 INTRODUCTION.......................................................................................................................7 1.1 OVERVIEW .......................................................................................................................... 7 1.2 HOW IT WORKS .................................................................................................................... 8 2 SYSTEM COMPONENTS.......................................................................................................11 2.1 Z810 PRINTER COMPONENTS ............................................................................................ 11 2.1.1 Z810 3D Printer........................................................................................................ 11 2.1.1.1 Z810 Carriage Assembly...................................................................................... 14 2.1.1.2 Z810 Service Station............................................................................................ 15 2.1.1.3 Z810 Rear Connector Panel ................................................................................ 16 2.1.1.4 Z810 Printer Control Panel................................................................................... 17 2.1.2 ZF8 Powder Feeder................................................................................................. 18 2.1.2.1 ZF8 Rear Connector Panel .................................................................................. 19 2.2 ZD8 DEPOWDERING UNIT .................................................................................................. 20 2.2.1 Air Curtain ................................................................................................................ 22 2.2.2 ZD8 Control Panel ................................................................................................... 23 2.2.3 Powder Collection Drawer ....................................................................................... 24 2.2.4 ZD8 Cart .................................................................................................................. 24 2.3 DESPATCH LBB FORCED CONVECTION OVEN (OPTION)...................................................... 25 3 QUICK START GUIDE ...........................................................................................................26 3.1 PRINTER PREPARATION ..................................................................................................... 26 3.2 SETTING UP THE BUILD ...................................................................................................... 28 3.3 TRANSFERRING THE PART TO THE DEPOWDERING UNIT ...................................................... 29 3.4 DEPOWDERING THE PART .................................................................................................. 30 3.5 TRANSFER TO OVEN .......................................................................................................... 31 3.6 FINISH PART ..................................................................................................................... 31 3.7 USER TIPS ........................................................................................................................ 31 3.7.1 Set-up and Post-processing .................................................................................... 31 3.7.1.1 Part Setup, Orientation, and Print Settings .......................................................... 31 3.7.1.2 Gross and Fine Depowdering .............................................................................. 32 3.7.1.3 Oven Dry the Part................................................................................................. 32 3.7.2 Part Infiltration.......................................................................................................... 32 3.7.2.1 When Using Z-Bond Resin................................................................................... 32 3.7.2.2 When Using a Z-Snap or Z-Max Epoxy ............................................................... 32 4 PREPARING THE Z810 3D PRINTER...................................................................................33 4.1 REPLACING THE BUILD PALLET........................................................................................... 33 4.2 CLEANING THE SERVICE STATION ...................................................................................... 33 4.3 GREASING THE FAST AXIS ................................................................................................. 34 4.4 OIL SLOW AXIS ................................................................................................................. 35 4.4.1 Snowplows............................................................................................................... 35 4.4.2 Slow Axis Path. ........................................................................................................ 35 4.5 FILL BED ........................................................................................................................... 36 4.6 REMOVE POWDER FROM OVERFLOW CHUTE ...................................................................... 36 4.7 CHECKING POWDER LEVELS .............................................................................................. 37 4.8 CHECK FLUID LEVELS ........................................................................................................ 38 4.8.1 Binder Containers .................................................................................................... 38 4.8.2 Check Waste Container........................................................................................... 39 4.8.3 zc3 Wash Fluid Container........................................................................................ 40 5 USING ZPRINT SOFTWARE .................................................................................................41 5.1 OPEN OR IMPORT THE FILE................................................................................................ 41 5.2 ORIENTING THE PART ........................................................................................................ 41 www.zcorp-users.com 2 Z810 System User Manual Z Corporation 5.2.1 Part Containing an Opening or Hollow Area............................................................ 41 5.2.2 Part Containing Overhangs ..................................................................................... 42 5.3 CHECKING BUILD SETTINGS ............................................................................................... 42 5.3.1 Powder Settings....................................................................................................... 43 5.3.1.1 Anisotropic Scaling Values................................................................................... 43 5.3.1.2 Saturation Values................................................................................................. 44 5.4 PRINTING THE BUILD.......................................................................................................... 45 6 REMOVING THE PART..........................................................................................................46 6.1 SET TIMES ........................................................................................................................ 46 6.2 GROSS DEPOWDERING...................................................................................................... 47 6.3 TRANSFERING THE PARTS TO THE DEPOWDERING STATION................................................. 49 6.4 POST PROCESSING TOOLS ................................................................................................ 53 7 DEPOWDERING THE PART..................................................................................................55 7.1 CHANGING AIR NOZZLES ................................................................................................... 55 8 INFILTRANTS.........................................................................................................................58 8.1 USING Z-MAX EPOXY......................................................................................................... 58 8.2 USING Z-BOND CYANOACRYLATE....................................................................................... 60 8.2.1 Safety Precautions................................................................................................... 60 8.2.2 General Application Notes ....................................................................................... 60 8.2.3 Spraying Instructions ............................................................................................... 60 8.2.4 Curing Information ................................................................................................... 60 8.3 USING Z-SNAP EPOXY....................................................................................................... 61 8.3.1 General Application Notes ....................................................................................... 61 8.3.2 Mixing Instructions ................................................................................................... 61 8.3.3 Curing Information ..................................................................................................
Load more

Recommended publications
  • Troubleshooting Decorative Electroplating Installations, Part 5
    Troubleshooting Decorative Electroplating Installations, Part 5: Plating Problems Caused Article By Heat & Bath Temperature Fluctuations by N.V. Mandich, CEF, AESF Fellow Technical Technical In previous parts of this series, emphasis was given The fast-machining steels must then be carburized to troubleshooting of the sequences for pre-plating or case-hardened to obtain a surface with the hardness and electroplating over metals, Parts 1 and 2;1 required to support the top chromium electroplate. the causes, symptoms and troubleshooting for Case hardening is the generic term covering several pores, pits, stains, blistering and “spotting-out” processes applicable to steel or ferrous alloys. It changes phenomena, Part 3;2 and troubleshooting plating on the surface composition of the top layer, or case, by plastic systems, Part 4.3 Here in Part 5, causes and adsorption of carbon, nitrogen or a mixture of the two. some typical examples of problems that occur in By diffusion, a concentration gradient is created. The electroplating as a result of a) thermal, mechanical heat-treatments and the composition of the steel are surface treatments, b) the metallurgy of the part to additional variables that should be addressed and taken be plated or c) effects of plating bath temperature into account in the electroplating procedure. on plating variables and quality of the deposits When discussing the effect of heat-treatment on are discussed. subsequent electroplating processes it is necessary to zero in on the type of heat-treatment involved. We Nearly every plater has at one time or another had the can defi ne the heat-treatment process as changing the experience of trying to plate parts that simply would characteristics of the parts by heating above a certain not plate.
    [Show full text]
  • Permanent Mold
    PERMANENT MOLD CASTING PROCESSES Many variations of the permanent mold process are well-suited for mass production of high-integrity light metal castings for automotive components. This article is based on “High Integrity Permanent Mold Casting Processes: Current and Future,” a presentation at the American Foundry Society’s 6th International Conference on Permanent Mold Casting of Aluminum and Magnesium. J. L. Jorstad* JLJ Technologies Inc. This Chrysler NS cross member was cast on a tilt permanent mold machine. Richmond, Virginia However, with the incorporation of ceramic-foam filters and their ability Permanent mold casting consists of several basic to smooth melt flow (Fig. 1), opportu- processes. In this article, key characteristics of nities become available to top-pour each will be considered in terms of their impact with significantly fewer entrapped ox- on high-integrity products. ides and other quality detractors. Turbulent flow Combining filters with down-sprue GRAVITY FILLING PROCESSES and runner designs proposed by Prof. Gravity pouring, whether manual, via auto- Campbell has made it possible to pour ladles, or robotic pouring, can be susceptible to reasonably high-integrity aluminum turbulence, which has a negative effect on high- castings, perhaps most suitable for a Pintegrity castings. It is nearly impossible to have variety of less-critical automotive molten aluminum free fall more than a few cen- applications. timeters without initially exceeding a safe flow Static top-pouring has another velocity of about 0.5 to 1 m/s. Note that a free fall downside too, an ever-diminishing of less than 0.1 m will accelerate to more than 1 effective metal head as fill progresses.
    [Show full text]
  • RESEARCH PROJECT No. 40
    Ductile Iron Society RESEARCH PROJECT No. 40 Survey of Greensand Properties of Member Foundries Mary Beth Krysiak Sand Technology Co. LLC, New Hudson MI Dr. Hathibelagal Roshan K & S Data Services LLC, Fox Point WI DUCTILE IRON SOCIETY Issued by the Ductile Iron Society for the use of its Member Companies – Not for General Distribution DUCTILE IRON SOCIETY 15400 Pearl Road, Suite 234 Strongsville, Ohio 44136 (440) 665-3686 SEPTEMBER 2007 Research Report Project #40 2007 Survey of Greensand Properties of Member Foundries A Cooperative Project of Ductile Iron Society And Member Foundries Reported by Mary Beth Krysiak Dr. Hathibelagal Roshan Ductile Iron Society Issued by the Ductile Iron Society Located at 15400 Pearl Road, Suite 234; Strongsville, Ohio 44136 Contents 1, Executive Summary - pdf 2. Survey report Part A - pdf 3. Survey report Part B pdf 4. Correlations - pdf 5. Sand data sheet for collecting info - pdf 6. Sand grain photos - pdf 7. Test data - XL 8. Sand tests and guide to controls – chart - pdf 9. Sand tests and guide to controls – chart - Word Sand Survey Report Executive Summary 1. The sand tests were done in one laboratory known to have many years of expertise in sand testing. During transport, regardless of how well samples are sealed, the samples age and while moisture content remains fairly stable, compactability drops as the moisture is absorbed further into the clay. In addition, the sands cool from the temperature at which they were in use at foundry. While the cooling effect could not be negated on a practical level, the sands were retempered or conditioned, prior to testing, to the reported target compactability at the foundry.
    [Show full text]
  • Electroforming of Copper Canisters
    Mineralogical Magazine, November 2015, Vol. 79(6), pp. 1521–1528 OPEN ACCESS Manufacturing technology for implementing geological disposal: electroforming of copper canisters 1,2,3,* 1,3 1,4 2 2 T. H ERNANDEZ-SELVA ,D.L.ENGELBERG ,F.SCENINI ,D.FOX AND A. MCCLUSKY 1 Materials Performance Centre, School of Materials, The University of Manchester, Manchester M13 9PL, UK 2 BEP Surface Technologies Ltd, Eton Hill Road, Radcliffe, Manchester M26 2XT, UK 3 Research Centre for Radwaste and Decommissioning, The University of Manchester, Manchester M13 9PL, UK 4 Nuclear Advanced Manufacturing Centre, The University of Manchester, Manchester M13 9PL, UK ABSTRACT The existing capability and current development needs for implementing electroforming as a viable manufacturing process to produce copper cylinders with dimensions comparable to the Swedish KBS-3 design are discussed. Large freestanding copper cylinders can be produced readily, but there is a need to address challenges associated with controlling the electro-deposition process to conform to compositional and mechanical requirements of the copper layers produced. The methodology to optimize the manufacturing process, based on a study of key parameters, such as the effects of electrolyte additives on grain size and the chemical composition of electroformed layers, is described here. Possible ways to introduce a robust manufacturing route are also presented. K EYWORDS: nuclear wastes, deep geological repository, KBS-3 copper canister, electroforming, electroplating. Introduction Institute, 2006; ARAO, 2009), whereas the Nuclear Waste Management Organization (NWMO) of THE concept for the UK’s inventory of high-level Canada is focusing its research on thick-walled radioactive waste (HLW) is to implement deep steel containers coated with 3 mm of electroplated geological disposal (Department of Energy & copper (Keech et al., 2014).
    [Show full text]
  • Enhanced Fracture Strength in the Working Layer of Rolls Manufactured in Ni-Hard Cast Iron Alloyed with Mo, Nb and Mg
    metals Article Enhanced Fracture Strength in the Working Layer of Rolls Manufactured in Ni-Hard Cast Iron Alloyed with Mo, Nb and Mg Alberto Cofiño-Villar 1, Jose Florentino Alvarez-Antolin 1,* and Juan Asensio-Lozano 2 1 Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica, Edificio departamental Este, Universidad de Oviedo C/ Wifredo Ricart s/n-, 33204 Gijón (Asturias), Spain; [email protected] 2 Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica, Escuela de Ingeniería de Minas, Energía y Materiales, Universidad de Oviedo, C/ Independencia 13, 33004 Oviedo (Asturias), Spain; [email protected] * Correspondence: alvarezfl[email protected]; Tel.: +34-985-181-949 Received: 28 August 2018; Accepted: 13 September 2018; Published: 15 September 2018 Abstract: One of the main in-service failure mechanisms of the work-rolls used in hot strip mill finishing stands is surface spalling. The indefinite chill double-poured rolls usually comprise of a peripheral working layer made of crushed Ni-hard cast iron and a grey cast iron core, mostly pearlitic matrix with spheroidal graphite. To enhance its wear resistance, the working layer can be alloyed with Mo and Nb. The possible cracking and spalling of the surfaces of these work-rolls is strongly influenced by the presence of carbides and the continuity of their network. The flexural and impact toughness tests are reliable testing methods to assess these properties. The aim of this paper is to identify those manufacturing factors that have a significant effect on the flexural strength and toughness of this material, correlating the results with the volume fraction of precipitated carbides.
    [Show full text]
  • Metal Casting Process
    Sand Casting Sand Mold Making Procedure The first step in making mold is to place the pattern on the molding board. The drag is placed on the board Dry facing sand is sprinkled over the board and pattern to provide a non sticky layer. Molding sand is then riddled in to cover the pattern with the fingers; then the drag is completely filled. The sand is then firmly packed in the drag by means of hand rammers. The ramming must be proper i.e. it must neither be too hard or soft. After the ramming is over, the excess sand is leveled off with a straight bar known as a strike rod. With the help of vent rod, vent holes are made in the drag to the full depth of the flask as well as to the pattern to facilitate the removal of gases during pouring and solidification. The finished drag flask is now rolled over to the bottom board exposing the pattern. Cope half of the pattern is then placed over the drag pattern with the help of locating pins. The cope flask on the drag is located aligning again with the help of pins The dry parting sand is sprinkled all over the drag and on the pattern. A sprue pin for making the sprue passage is located at a small distance from the pattern. Also, riser pin, is placed at an appropriate place. The operation of filling, ramming and venting of the cope proceed in the same manner as performed in the drag. The sprue and riser pins are removed first and a pouring basin is scooped out at the top to pour the liquid metal.
    [Show full text]
  • Metals in the Bible: Silver (Part 1)
    The Testimony, August 2004 329 times of restitution of all things” (Acts 3:21, AV). the last verse of his song does look forward to In contrast, the song of Moses in chapter 32 pre- the time of blessing when the Gentiles will re- dicts future rebellion and consequent punish- joice with God’s people and atonement will have ment that would occur before the final glory been provided for both land and people (v. 43). would be attained by the nation. Nevertheless, (To be continued) New feature Metals in the Bible 3. Silver (Part 1) Peter Hemingray In 1996 and 1997 The Testimony published two two-part articles under the title, “Metals in the Bible”, in which we looked at iron and copper.1 We considered the ancient technology of iron, and how this knowledge helps illuminate the Biblical references to it. In particular, we saw how the introduction of iron during the period of the conquest affected the Israelites, who had to overcome superior technology through the power of God. For copper (or brass, as the AV terms it) the ancient metalworking methods were illuminated with illustrations from Timnah in Palestine, and we argued for the symbology of copper in the Bible being primarily that of strength, and only rarely that of the strength of sin. The intention was to complete these studies on metals of the Bible by considering silver, then gold. This we have now done in two further two-part articles to be published in this and the coming months, God willing. E WILL CONTINUE the theme of il- • examine the references to refining and cruci- lustrating the Biblical passages about bles in the light of our knowledge of ancient Wmetals with descriptions of the ancient metalworking practices metalworking techniques, as we consider silver, • look at the few references to lead in the Bible, the next metal up in Nebuchadnezzar’s image often associated with silver for reasons we after the iron and brass already considered.
    [Show full text]
  • ZEP LUBEZE DRILL CHILL™ Cutting Oil
    PROD. #1378 205 PRODUCT SPECIFICATION REPORT ZEP LUBEZE DRILL CHILL™ Cutting Oil DESCRIPTION A fatty, mineral oil based, ready to use metalworking fluid, fortified with extremely pressure additives. FEATURES BENEFITS • Versatile • Can be used on carbon, allot, and stainless steel as well as softer metals such as aluminum. • Anti weld • Helps prevent chips from welding to tool surface • Prolongs tool life • Reduces friction, increases cutting speeds • Inhibits rust • Leaves behind a light oil film which provides temporary protection to the work piece and tool surface • Conserves energy • Lowers resistance to cutting resulting in lower torque and power requirements APPLICATIONS An excellent lubricating fluid for metalworking applications, particularly in extreme pressure situations such as drilling and threading. Used in any metalworking and fabricating facility. COMPANION PRODUCTS Zep Gator Tails, Zep degreasers, Zep Cold Galvanized, Zep Super Penetrant, Zep Ironclad, Zep PLS, Zep Viton Gloves SPECIFICATIONS Physical form . .Thin, amber oil Boiling point . .545 - 884°F Flash point (TCC) . .300°F Shelf life . .1 year minimum Odor . .solvent odor DOT Shipping label . .LUBRICANTS, METAL CUTTING, pH . .N/A . .LIQUID, NOI Specific gravity . .0.88 PACKAGING 5 gallon pail 55 gallon drum ZEP MANUFACTURING COMPANY 1-877-I BUY ZEP Your One Source for Cleaning and Maintenance Products (1-877-428-9937) PROD. #1378 205 PRODUCT LABEL ZEP LUBEZE DRILL CHILL™ Cutting Oil ™ PROD.# 1378 LUBEZE DRILL CHILL 501B CUTTING OIL •Drilling •Cutting •Boring •Thread Cutting and Machining Operations A premium cutting oil fortified with sulfur and chlorine compounds for FIRST AID: effectiveness in extreme pressure applications. Provides excellent lubricity. EYES: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally Reduces energy requirements by lowering resistance to cutting tool.
    [Show full text]
  • DROSS in DUCTILE IRON by Hans Roedter, Sorelmetal Technical Services
    98 DROSS IN DUCTILE IRON by Hans Roedter, Sorelmetal Technical Services WHAT IS “DROSS ”? magnesium with other elements. Dross also Dross is a reaction product which is formed from occurs in the form of long stringers instead of Mg treatment and during subsequent reoxidation concentrated “slag like” areas. When it occurs in of Mg rejected from the molten metal before it this string like form it acts like cracks or flake solidifies. It is therefore just another word for a graphite in the structure and so fatigue strength specific type of slag (reaction product). and impact strength of the material are lowered considerably. The reaction binds magnesium with sulphur, oxygen and silicon and forms continuously. This “dross” is light weight and so it will generally be found in the upper surfaces and under cores, but it can be entrained throughout the metal as well, especially with colder pouring tempera - tures. It is very difficult to completely avoid the reaction of magnesium with these other elements, since we need magnesium to form nodules. We are always confronted with the problem of dross in the production of Ductile Iron. WHAT IS PROMOTING “DROSS ” AND WHAT CAN BE DONE TO KEEP THE “DROSS ” OUT OF THE CASTING ? Since “dross” is always connected with magnesium, it is necessary to keep the magnesium level as low as possible. Good inoculation practice with some late inoculation in conjunction with sufficient magnesium will When looking at “dross” in the microscope you produce nice round small nodules. See will almost always find flake graphite in Suggestion Sheet 76.
    [Show full text]
  • Lecture 8: Casting Technology
    Lecture 8: Casting Technology MT321: Principles of Materials Processing Lecture 8:Casting Technology 1 Design of Gating Systems Functions of a gating system: To deliver liquid metal to mould cavity within a short time. To minimise turbulent flow. To keep dross and/or inclusion particles from entering mould cavity. MT321: Principles of Materials Processing Lecture 8:Casting Technology 2 MT321: Principles of Materials Processing Lecture 8:Casting Technology 3 How to deliver liquid metal fast? By using a sufficient large cross sectional area; By using multiple runners. How to minimise turbulent flow? By using tapered sprue and runners. By bottom filling of the liquid into the mould cavity. By regulating the change of cross sectional area of the channels according to fluid dynamics principles. MT321: Principles of Materials Processing Lecture 8:Casting Technology 4 How to keep dross and inclusion particles from entering mould cavity? By using dross traps. By using filters. MT321: Principles of Materials Processing Lecture 8:Casting Technology 5 Various types of ceramic filters that may be inserted into the gating systems of metal castings MT321: Principles of Materials Processing Lecture 8:Casting Technology 6 MT321: Principles of Materials Processing Lecture 8:Casting Technology 7 Solidification Shrinkage The liquid of most metals and alloys shrinks during solidification. Solidification shrinkage (percent) of some common engineering metals and alloys MT321: Principles of Materials Processing Lecture 8:Casting Technology 8 Two considerations must be made in designing a casting mould, due to the solidification shrinkage: A riser, which is a reservoir of liquid, is needed to compensate for the shrinkage of the whole casting.
    [Show full text]
  • Download European Recycling Services Brochure
    ALPHA Reclamation Services Brochure Maximize Your Metal Recovery Return macdermidalpha.com August, 2020 Europe ASSEMBLY SOLUTIONS ALPHA Metal Reclamation Services Minimise Your Environmental Liability, Maximise the Value of Your Waste Materials Environmental legislation specifies the importance of proper waste management, recovery and recycling techniques to reduce pressure on resources and improve their use. Due to these requirements and considering that metal waste is recyclable, it is now essential for you to have a reliable and efficient recycler. Alpha, a brand of MacDermid Alpha Electronics Solutions, offers a safe and efficient recycling service which helps companies to meet their environmental and legislative requirements and at the same time, maximize the value of their waste stream. • Alpha’s experienced staff are dedicated to reclamation efforts and will maximize the amount of metal processed from your reclaim material. • Reclaim material sent to Alpha is carefully processed and no material that has a metal content is sent to a landfill. • Alpha provides tough, sealable and disposable metal recycling buckets and drums. • All shipments are lot traceable and certification can be provided on request. • Alpha’s Certified Recycling Partner Program enables our customers to work with local partners operating throughout Europe who are legally authorized to collect waste from electronics assembly processes. 2 ALPHA Metal Reclamation Services Recycling Waste Streams Wave Solder Dross and Hot Air Solder Level (HASL Dross) – Oxidation particles that form on the surface of molten metal (solder). This material can be skimmed off and recycled. Solder Paste – Paste that has expired its shelf life or been removed from the stencil Empty Paste Jars and Cartridges Solder Bar and Wire – Expired solder bar and wire Pot Dump and Contaminated Solder Bath – From wave and selective soldering machines.
    [Show full text]
  • From the on Inal Document. What Can I Write About?
    DOCUMENT RESUME ED 470 655 CS 511 615 TITLE What Can I Write about? 7,000 Topics for High School Students. Second Edition, Revised and Updated. INSTITUTION National Council of Teachers of English, Urbana, IL. ISBN ISBN-0-8141-5654-1 PUB DATE 2002-00-00 NOTE 153p.; Based on the original edition by David Powell (ED 204 814). AVAILABLE FROM National Council of Teachers of English, 1111 W. Kenyon Road, Urbana, IL 61801-1096 (Stock no. 56541-1659: $17.95, members; $23.95, nonmembers). Tel: 800-369-6283 (Toll Free); Web site: http://www.ncte.org. PUB TYPE Books (010) Guides Classroom Learner (051) Guides Classroom Teacher (052) EDRS PRICE EDRS Price MF01/PC07 Plus Postage. DESCRIPTORS High Schools; *Writing (Composition); Writing Assignments; *Writing Instruction; *Writing Strategies IDENTIFIERS Genre Approach; *Writing Topics ABSTRACT Substantially updated for today's world, this second edition offers chapters on 12 different categories of writing, each of which is briefly introduced with a definition, notes on appropriate writing strategies, and suggestions for using the book to locate topics. Types of writing covered include description, comparison/contrast, process, narrative, classification/division, cause-and-effect writing, exposition, argumentation, definition, research-and-report writing, creative writing, and critical writing. Ideas in the book range from the profound to the everyday to the topical--e.g., describe a terrible beauty; write a narrative about the ultimate eccentric; classify kinds of body alterations. With hundreds of new topics, the book is intended to be a resource for teachers and students alike. (NKA) Reproductions supplied by EDRS are the best that can be made from the on inal document.
    [Show full text]