DOCSLIB.ORG

Planar Structures with Automatically Generated Bevel Joints

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Planar Structures with Automatically Generated Bevel Joints Planar structures with automatically generated bevel joints The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation Zhilong Sua, et al., "Planar structures with automatically generated bevel joints." Computers & Graphics 72 (2018): p. 98-105. doi: 10.1016/j.cag.2018.02.005 ©2018 Author(s) As Published 10.1016/j.cag.2018.02.005 Publisher Elsevier Version Author's final manuscript Citable link https://hdl.handle.net/1721.1/124169 Terms of Use Creative Commons Attribution-NonCommercial-NoDerivs License Detailed Terms http://creativecommons.org/licenses/by-nc-nd/4.0/ ARTICLE IN PRESS JID: CAG [m5G; February 27, 2018;2:49 ] Computers & Graphics xxx (2018) xxx–xxx Contents lists available at ScienceDirect Computers & Graphics journal homepage: www.elsevier.com/locate/cag Technical Section Planar structures with automatically generated bevel joints ∗ ∗∗ Q1 Zhilong Su a, Lujie Chen b, , Xiaoyuan He a, , Fujun Yang a, Lawrence Sass c a Southeast University, Nanjing, 2 Si Pai Lou, Nanjing, China b Singapore University of Technology and Design, 8 Somapah Road, Singapore c Massachusetts Institute of Technology, MA, USA a r t i c l e i n f o a b s t r a c t Article history: A generative method based on computer algorithms is proposed to automatically produce parts of planar Received 31 August 2017 structures ready for fabrication. The parts resemble surface patches of the digital model of a structure. Revised 29 January 2018 Each part is generated with bevel joints on the edges so that part-to-part connection is enabled by fric- Accepted 13 February 2018 tion of the joints. The shape of a bevel joint is determined by the interior angle between two parts, and Available online xxx is modelled by a number of parameters, including the thickness of a planar material in use. The bevel Keywords: joints consist of slanted planes, and in principle when they are assembled, no gap exists on the surface Planar structures of the physical structure. Due to the slanted planes, the joints cannot be fabricated by a laser cutter Bevel joint that can only produce vertical cuts. We experimented the fabrication with a three-axis CNC router and a Digital fabrication 3D printer; both produced accurate and robust parts; however, there is limitation in using a CNC cutter, CNC cutting which is discussed in details. 3D printing ©2018 Elsevier Ltd. All rights reserved. 1 1. Introduction For large-scale prototyping [8] , i.e. practically any dimension 23 that is beyond one meter, planar structures are one of the most 24 2 Creative design is inevitably influenced by the capability of adopted approaches [9] . They have long been used in architecture, 25 3 production. Many years of research has led designers to recognize construction, and ship building. A typical work process starts from 26 4 that physical artefacts, either in the form of low-fidelity prototypes a digital 3D model; create a representation of the model by 2D 27 5 or high-quality products, give valuable feedback on a conceptual planes in Computer-Aided Design (CAD) software; materialize 28 6 idea and are critical to the success of an iterative design pro- the planes by assigning a thickness; generate slots and joints for 29 7 cess [1] . Methods of rapid physical production are therefore connecting the planar parts; fabricate and assemble the parts to 30 8 valuable to designers of various industries. Automobile, marine produce a physical artefact. Although the process involves a lot of 31 9 and air plane designers make mockups to study the aesthetics, manual work such as drafting in CAD software, it offers a designer 32 10 dynamics, and mechanics of their products [2–4] . Architects make great flexibility in materialize his design. Designers also see oppor- 33 11 scaled models to understand the interaction between a building tunities to automate part of the process and come up with creative 34 12 and an environment [5] . From a designer’s point of view, physical solutions. Sass [10,11] proposed a shape grammar to streamline 35 13 prototypes are best to be created with low cost, in a short time, the generation of interlocking planar parts to produce house 36 14 while having good fidelity and strength because they are supposed models. He used computer-numerically controlled (CNC) machines 37 15 to be used for just-in-time evaluation [6] . The two-sided expec- to fabricate the parts. This work demonstrated preliminary idea on 38 16 tation on prototypes has motivated research in rapid prototyping automation of planar structures, while a shape grammar is not a 39 17 across multi-disciplines. 3D printing as a highly automated rapid computer program but rule sets to guide manual drafting. 40 18 prototyping method has been widely used [7] . A printed artefact Researchers in computer graphics started to look into direct 41 19 obtains a solid surface that closely resembles the original digital physical production in 2006 [12] , where direct means that the 42 20 model. However, 3D printing has limitations, such as low speed parts of a physical artefact are directly generated from a digital 43 21 and limited build volume. In areas where these limitations are model with little human intervention in modeling (drafting). This 44 22 unacceptable, other methods are applied instead. approach also relies on CNC machining but its impact is sub- 45 stantial: Computer algorithms can independently extract relevant 46 shape information to produce the drawings of parts, which are 47 later fabricated using CNC machines. As a result, human error is 48 Q2 ∗ Corresponding author . ∗∗ 49 Corresponding author . largely eliminated from modeling and fabrication. Since then, new E-mail address: [email protected] (L. Chen). ideas in automating the production of planar structures have been 50 https://doi.org/10.1016/j.cag.2018.02.005 0097-8493/© 2018 Elsevier Ltd. All rights reserved. Please cite this article as: Z. Su et al., Planar structures with automatically generated bevel joints, Computers & Graphics (2018), https://doi.org/10.1016/j.cag.2018.02.005 ARTICLE IN PRESS JID: CAG [m5G; February 27, 2018;2:49 ] 2 Z. Su et al. / Computers & Graphics xxx (2018) xxx–xxx 51 flourished. They address various questions such as improving slots 52 and joints for complex models [13] , differentiating importance 53 of planar parts [14,15] , chair-design system [16] , parametric de- 54 sign system [17] , unequally spaced slots [18] , non-perpendicular 55 parts [19] , and bendable parts [20] . 56 2. Related work Fig. 1. (a) Finger joints of a watertight structured achieved in [25] . (b) Bevel joints 57 This paper is concerned with a type of planar structures of a planar structure. (c) An exploded view of the bevel joints in (b). 58 that is a watertight representation of a digital model. Methods 59 aforementioned produce openly sliced models that are not suit- 60 able for certain applications; for instance, be used as mold for 61 casting. Watertight planar structures are physical models as a 62 complete volume, as opposed to sets of overlapping slices. There 63 is sparse exploration of this method of model production. Chen 64 et al. [21] developed a multiplanar modeler that subdivided a 65 digital model into several planar surfaces. Interior connectors were 66 used to join the planar parts. Due to the connectors, fabrication 67 of a model requires two separate processes, one for the planar 68 parts and the other for the connectors. Song et al. [22] described a 69 coarse-to-fine prototyping system, where the interior of a model is 70 made of low-fidelity planar structures and the exterior is made of 71 high-fidelity 3D printed parts. The complete model is an assembly 72 of 3D printed parts onto the planar structures. 73 While the above ideas from the computer graphics field have 74 accomplished watertight representation of a model, explorations 75 in architecture have found real-world applications of these struc- Fig. 2. Overview of the production system for planar structures bevel joints. 76 tures. Robeller et al. [23] created interlocking planar structures 77 with dovetail joints. The structures were strong and could be used 78 as pavilion in an architecture scale. Dovetail joints are widely We have made an interesting observation based on the work 115 79 used in conventional woodwork, the intellectual contribution of in [25] : Adding one more constraint to a watertight structure, we 116 80 [23] lies in a computational method to calculate the angle of a would get a planar structure without surface gaps. Fig. 1 shows 117 81 dovetail joint from the geometry of adjacent planar parts. The the difference in finger joints between the former achieved in 118 82 authors also applied robotic machining to fabricate the parts using [25] and a type of the latter. Clearly, the latter is more elegant 119 83 bevel cutting to accurately produce the joints along the edges. This and structurally robust. Note that the dovetail joints in [23] are 120 84 process greatly simplifies the production of self-interlocking planar different from those in Fig. 1 (b), which hold an object by friction, 121 85 structures, in which no additional connectors are needed; all parts just like those in Fig. 1 (a). Dovetail joints require much more 122 86 are held together by an interlocking mechanism and friction. complicated fabrication, assembly, and disassembly processes 123 87 Howe [24] applied watertight structures made of finger joints because they rely more on intricate shape for interlocking than 124 88 on concrete casting. He showed feasibility of casting large-scale friction between joints. 125 89 concrete structures that have curves, and demonstrated that form- This paper extends the algorithms developed in [25] to a new 126 90 work (mold) production can be a potential industry application of production system that generates structures without surface gaps 127 91 watertight structures.
Load more

Recommended publications
  • Getting the Most from Your Festool VS-600 Dovetail System
    1 Getting The Most From The Festool VS-600 Jointing System By: Jerry Work Table of Contents Page 3 Anatomy of a Dovetail Joint 9 The desired outcome – a perfect drawer every time 10 How the VS-600 system works 14 A perfect drawer using half blind dovetail joints 23 A perfect drawer using through dovetail joints 29 Perfect finger joints 31 Conclusion 32 One time setup 36 Using the metric system 40 Continuous improvement 41 What you need to know about the Festool templates 42 How to calculate drawer height for properly centered joints 43 Table of drawer heights for properly centered joints 43 Metric to approximate inch conversion 44 Meet the author 2 Getting The Most From The Festool VS-600 Jointing System By: Jerry Work Few things in woodworking invoke the image of quality more than well cut dovetails joining the sides of a drawer, box or cabinet. For thousands of years this simple, elegant joint has been employed by the finest craftsmen for its inherent strength as well as for its pleasing aesthetics. Watch a person who sees a fine piece of furniture for the first time. Their hands will invariably rub over the dovetail joints as though to confirm that this is truly a well crafted piece. Anatomy of a breaking the surrounding Dovetail Joint wood. There are several different types of joints that are all called “Dovetail Joints”. They get their name from a fan shaped male piece that looks a bit like the tail on a dove. That fan shaped male fits into a A dovetail joint requires at female recess of the same least one fan shaped male tail shape.
    [Show full text]
  • Floating Night Table Project Plans
    Floating Night Table Router Bits and Accessories Used: Pins and Tails Through Dovetail Templates (#6414/8714) 36” x 3/4” x 3/8 ” Slick Bar (#9492) Glue Joint Bit (#5553/7853) ¾ ” Straight Bit (#5479/7779) 25/32 ” Straight Bit (#7782) Plywood Straight Set (#6076/8376) 45º Chamfer Bit (#5376/7676) 3/8” Cove Bit (#6342/8642) Countersink Drill Bit Set (#9365) Other Tools and Material Used: Table Saw Belt Sander Random Orbit Sander Planer Glue Scraper #6 x 3/4” Screws Copyright 2010. MLCS Woodworking. Page 1 1. Cut the outside box parts oversized at first. Cut the top and bottom walnut pieces to 22” length x 7” width and cut the cherry side pieces to 10” length x 7” width (making these oversized will help avoid snipe). Then cut the front and back walnut drawer pieces to a size of 20” length x 7” width and the side pieces of cherry 11” length x 7” width. Plane all of the boards to 7/8” finished thickness. 2. Use the Glue Joint Bit (#7853/5553) to create the tongue and groove joint on the mating edges to create wider stock and glue up and clamp these assemblies. 3. After the glue has dried, remove the blanks from the clamps and scrape any excess glue off the surface. Finish plane the boards to final thickness. Then cut to final length and width. Outside box pieces will be finished at a thickness of 3/4” and the drawer pieces will be finished at a thickness of 1/2”. 4. Cut the pins and tails using the Pins and Tails Through Dovetail Templates (#6414/8714).
    [Show full text]
  • “IN-HOUSE TRAINING MATERIALS on FURTHER PROCESSING (Natural Forest Timbers and Plantation Timbers)”
    International Tropical Timber Organization PD 700/13 Rev.1 (I) : DEVELOPMENT OF INTRA-AFRICAN TRADE AND FURTHER PROCESSING IN TROPICAL TIMBER AND TIMBER PRODUCTS – PHASE I [STAGE 1] “IN-HOUSE TRAINING MATERIALS ON FURTHER PROCESSING (natural forest timbers and plantation timbers)” (Activity A6.1) i TECHNICAL REPORT N°6 ITTO Project PD 700/13 Rev.2 (I) Development of Intra-African Trade and Further Processing in Tropical Timber and Timber Products- Phase I [Stage I] A Report on the Implementation of Activity 6.1 “IN-HOUSE TRAINING MATERIALS ON FURTHER PROCESSING (natural forest timbers and plantation timbers)” Executed by : Mr. Sukiman & Dr.Hiras P.Sidabutar ii Acknowledgement I wish to express my sincere appreciation to Mr. Emmanuel Zemeka, Executive Director of the International Tropical Timber Organization, for granting me the opportunity to take part in the implementation of Project PD 700/13 Rev. 2 (I) “Development of Intra-African Trade and Further Processing in Tropical Timber and Timber Products (Phase I Stage 1). The specific task given to me, to compile available training materials on further processing, was truly challenging given the myriad procedures and techniques applicable to timber processing. Selecting the right themes and information to be included in the document within the sanctioned inputs to the task required deep thought and serious contemplation as well. I also wish to take this opportunity to convey my sincere thanks to Dr. Steven Johnson, Assistant Director of ITTO and Dr. Tetra Yanuariadi, ITTO Projects Manager, both from the Division of Trade and Industry, for making the necessary administrative arrangements that has facilitated the timely and effective completion of the task and to Dr.
    [Show full text]
  • Woodworking Joints.Key
    Woodworking making joints Using Joints Basic Butt Joint The butt joint is the most basic woodworking joint. Commonly used when framing walls in conventional, stick-framed homes, this joint relies on mechanical fasteners to hold the two pieces of stock in place. Learn how to build a proper butt joint, and when to use it on your woodworking projects. Basic Butt Joint The simplest of joints is a butt joint - so called because one piece of stock is butted up against another, then fixed in place, most commonly with nails or screws. The addition of glue will add some strength, but the joint relies primarily upon its mechanical fixings. ! These joints can be used in making simple boxes or frames, providing that there will not be too much stress on the joint, or that the materials used will take nails or screws reliably. Butt joints are probably strongest when fixed using glued dowels. Mitered Butt Joint ! A mitered butt joint is basically the same as a basic butt joint, except that the two boards are joined at an angle (instead of square to one another). The advantage is that the mitered butt joint will not show any end grain, and as such is a bit more aesthetically pleasing. Learn how to create a clean mitered butt joint. Mitered Butt Joint The simplest joint that requires any form of cutting is a miter joint - in effect this is an angled butt joint, usually relying on glue alone to construct it. It requires accurate 45° cutting, however, if the perfect 90° corner is to result.
    [Show full text]
  • C. Moulding and Millwork Technical Bulletin C-1 Working with VERSATEX
    C. Moulding and Millwork Technical Bulletin C-1 Working with VERSATEX The uses of VERSATEX are only limited by your imagination. VERSATEX can be easily and quickly worked with the same standard tools used to process wood and metal. All tools should be sharp. In general, use a high cutting speed, a slow, continuous feed rate and good dust extraction. The following guidelines were designed to help you understand how to cut, drill, rout and mill VERSATEX. Cutting VERSATEX can be cut utilizing circular saws, reciprocating/saber saws, band saws, table saws, multiple blade gang rip saws, or any other saw commonly used to process wood. Best results are achieved when using blades that are designed for cutting wood or plastic. Care should be taken to not allow excessive frictional heat build up while cutting. Finer tooth band or hacksaw blades generally do not work well, because the tooth spacing will create excessive heat causing the PVC to fuse together along the cut line. When cutting VERSATEX the same safety guidelines used for cutting wood should be followed. The material should be cut at the proper feed rate, well supported, and the tooling should be sharp. Rough cut edges can result from excessive friction causing heat build up while cutting, poor support of product during cutting or worn tooling or blades. Power shears and guillotine cutters are not an acceptable method of cutting, as they tend to crush the edges. Saw Blades Circular Saws: Carbide tipped blades are recommended (32 -tooth blade optimal). Standard carbon steel blades will work, but must be kept sharp.
    [Show full text]
  • Woodworking Glossary, a Comprehensive List of Woodworking Terms and Their Definitions That Will Help You Understand More About Woodworking
    Welcome to the Woodworking Glossary, a comprehensive list of woodworking terms and their definitions that will help you understand more about woodworking. Each word has a complete definition, and several have links to other pages that further explain the term. Enjoy. Woodworking Glossary A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | #'s | A | A-Frame This is a common and strong building and construction shape where you place two side pieces in the orientation of the legs of a letter "A" shape, and then cross brace the middle. This is useful on project ends, and bases where strength is needed. Abrasive Abrasive is a term use to describe sandpaper typically. This is a material that grinds or abrades material, most commonly wood, to change the surface texture. Using Abrasive papers means using sandpaper in most cases, and you can use it on wood, or on a finish in between coats or for leveling. Absolute Humidity The absolute humidity of the air is a measurement of the amount of water that is in the air. This is without regard to the temperature, and is a measure of how much water vapor is being held in the surrounding air. Acetone Acetone is a solvent that you can use to clean parts, or remove grease. Acetone is useful for removing and cutting grease on a wooden bench top that has become contaminated with oil. Across the Grain When looking at the grain of a piece of wood, if you were to scratch the piece perpendicular to the direction of the grain, this would be an across the grain scratch.
    [Show full text]
  • April 2019, Vol
    WOODWORKERS Northeastern Woodworkers Association NEWApril 2019, Vol. 28, SNumber 4 April Meeting Designing Your Own Furniture Doesn’t Have to be Scary Speaker: Mike Pekovich Thursday, April 11, 2019 at 7:00 PM Shaker Heritage Society Meetinghouse 25 Meeting House Road, Albany, NY “When we think of designing furniture, the first thought that usually comes to mind is some radical new design that no one has built before, and that can Mike Pekovich be an intimidating thing. For me though, design is really about investing ourselves just a little in the work we make. This can mean something as simple as changing the wood or a detail in an existing design or altering a design to fit a specific use or location in a house. Often it means just building with the user in mind, so that what we make uniquely fits the person we make it for. I’ll cover all of those thoughts as well as the step-by-step process I use to come up with an idea and then translate it into a finished piece of furniture.”- Mike Pekovich Pekovich cabinet Saratoga Springs City Center Saratoga Springs, NY 2019 SATURDAY AND SUNDAY WOODWORKERS’ March 30 and March 31, 2019 10 AM to 5PM SHOWCASE Guest Speakers: is almost here! Garrett Hack, Will Neptune, and Steven Sanford presented by Feature Exhibits: Art of Brad Conklin and the Sculptures of Al Jordan The Northeastern With Woodworkers Association Music by The Adirondack Bluegrass League Crafters SIG has a Major Project By Susan McDermott NWA members are happy to resume their SIG activities now the 97 Railroad Avenue shop is open.
    [Show full text]
  • Extendable Large Dovetail
    Instruction Extendable Manual Large Dovetail Jig Part # 3458 CAUTION: Please read, understand, and follow all manufacturers instructions, guidelines and owners manuals that come with your power tools. Peachtree Woodworking Inc. and its subsidiaries assume no liability for accidents or injuries caused by improper use of this product. © Copyright Peachtree Woodworking Inc. 2010. All images, copy, and graphics are copyrightedB by law and may not be copied, or reproduced without our express written consent. Peachtree Extendable Dovetail System Instructions Introduction The Peachtree Extendable Dovetail system takes a simple approach to making beautiful thru-dovetail’s, a hallmark of fine craftsmanship. The hardest part about cutting dovetails is marking and cutting the matching angles to one another. That’s what makes this system so easy. We have done the math for you and milled the exact cuts that need to be made in this heavy duty and easy to use jig. The Peachtree Extendable Dovetail system works in conjunction with bearing guides on the shank of router bits instead of using those hard to center brass bushing guides. Because the bearing is already centered on the bit it makes setting up to cut the joint fast and easy. We have milled the template to match the bearing size so that the bit is perfectly centered and there is no slop, wear or no waste. Unlike other templates you have seen, our jig will work with two different thickness stock as well as two different widths. We have also added extension tabs to the jig, so you can make dovetail cuts as long as you need by attaching two Peachtree Dovetail Jigs together.
    [Show full text]
  • WORK, Vol. 1.- No.2
    • Q\n lHLustrateb Jltaga;:; ine of lP ractice an~ F OR ALL WORKMEN, PROF ESSIONAL AND AMATE UR. VOL. I.-No.2.] SATURDAY, MARCH 3D, 1889 . •, [ P RI CE OXE PE~N Y. A HOllE.M,lDE DOG CHUCK. ! eompaslles and roug!l out slightly larger to taken that the slots. when fini shed, arc BY OLLA PODRIDA. allowJor turning. Bore and tap the cen~re square to the face. The plate may now be ; , to SUit nose of mandrel j the thread with prepared for the front of chuck by cutting UTILIT'r or CHUCK-r.iATERIALS-COST-PROPOR· , care, can be formed by the mandrel nose a piece to the size and marking the posi ti o ll ~ TIONATE DIME:s'SIOSS O~' BODy- MODIt O~' itself if no suitable tap is at ha.nd. By the of the slots from the chuck by laying the MAKINO CHUCK - CoNSTRUCTION OJ' Docs. way, every amateur latbesman should have latter upon the plate and tracing the out­ "THE e1tuck about to be described ~ll be 0. set of taps co rr e~ponding wit~ the man- line:s. of ~he s l ~ts wit~1 ~ scriber, noting the founa usefu l for al most every variety of I drel of Ius mncillne. Returnmg to the position m whIch this IS done so that the work, and, as far as the needs of an averago i subject, the next thing is to prepare the I plate may readily be replaced in the l)osition -amateur go, it will con;tpet~ s uccess f~lIy and I sheet ir.o n facin8 fo r the ba.c~ by ~t ri king from wh.ich it .
    [Show full text]
  • United States Patent (19) 11 4,422,356 Pertle 45) Dec
    United States Patent (19) 11 4,422,356 Pertle 45) Dec. 27, 1983 54) CUTTING TOOL BIT HOLDER 3,129,620 4/1964 Muelhauser ......................... 144/205 4,149,436 4/1979 Blattler .......... 75 Inventor: John E. Pertle, Garden Valley, Calif. 4,343,207 8/1982 Paysinger ............................. 82/4 R 73) Assignee: Tri Tool Inc., Rancho Cordova, Calif. FOREIGN PATENT DOCUMENTS 21) Appl. No.: 388,709 1020524 2/1953 France .................................... 82/37 Primary Examiner-Leonidas Vlachos 22) Filed: Jun. 15, 1982 Attorney, Agent, or Firm-Bacon & Thomas (51) Int. Cl. .............................................. B23B 29/04 57 ABSTRACT (52) - 82/36 R; 82/4 C 58 Field of Search ................ 82/36 R, 36.4, 37, 4 C, A cutting tool bit holder for a machine tool removably 82/4 R, 4 A; 144/205 secures a bit having a dovetail base in cutting position on a rotary tool fixture by means of a removable clamp 56) References Cited bar and an opposed gib surface. The clamp bar is se U.S. PATENT DOCUMENTS cured by removable fasteners and the tool bit may be 2,188,917 2/1940 Poorman ............................. 82/36 R reversable and standardized. 2,326,467 8/1943 Kuehn ....... ... 82/34 R 3,103,140 9/1963 Connelly ............................... 82/4 R. 10 Claims, 4 Drawing Figures U.S. Patent Dec. 27, 1983 Sheet 1 of 3 4,422,356 Ø 8 []```` | U.S. Patent Dec. 27, 1983 4,422,356 ZZZ„||||||||||||||||||| 4,422,356 1. 2 tool bit for continued machining operations. The tool CUTTING TOOL BET HOLDER bit is held in place by a removable clamp bar that se cures the tool bit to the forward facing surface of the BACKGROUND OF THE INVENTION holder in cooperation with a female gib surface pro 1.
    [Show full text]
  • Dovetail Jigs5.Indd
    SHOP-TESTED AND RATED T hrough-dovetail jigs under $350 A THROUGH-DOVETAIL JOINT Through dovetails make a strong and beautiful joint, but who has the time to cut them by hand? We tested 10 router-assisted jigs and found winners in three price ranges. ew things say more about the quality Dovetail jigs have a reputation for being of a project than through-dovetail overpriced and overcomplicated, but is that Tails Fjoinery. Attractive looks aside, the a fair characterization? To find out we joint’s interlocking pins and tails have rounded up 10 jigs capable of producing proven their strength and reliability in join- through dovetails, with prices ranging from Pins ing boards end to end for more than 5,000 $50 to $330. Three jigs (the CMT300, years. Some woodworkers get misty-eyed Craftsman 25455, and Woodline WL-RJT) when they romanticize about cutting dove- require buying accessory equipment to tails with hand tools, but you can use a make this joint, thus inflating their base router and a commercial jig to do the job in prices. After running each jig through rigor- a fraction of the time—and typically with ous testing and letting the dust settle, here’s more precision and airtight fit. what we found. woodmagazine.com 77 Despite unique features, jigs fit one of two styles THE UPSIDE OF UPSIDE DOWN Although the 10 jigs we tested achieve the these, the Katie Jig, Keller, and MLCS jigs same end result—tight-fitting through- can be used in a vise or on a benchtop for dovetail joints—these work-savers certainly handheld routing, or you can use them Bearing-guided bit don’t look the same.
    [Show full text]
  • Creating Dovetail Joints and Casework
    Woodworking: The Art and the Craft CREATINGCREATING DOVETAILDOVETAIL JOINTSJOINTS ANDAND CASEWORKCASEWORK TEACHER’S GUIDE INTRODUCTION This Teacher’s Guide provides information to help you get the most out of Creating Dovetail Joints and Casework. The contents of this guide will allow you to prepare your students before using the program and to present follow-up activities to reinforce the pro- gram’s key learning points. Part of Woodworking: The Art and the Craft video series, Creating Dovetail Joints and Casework teaches how to make basic dovetail joints. This practical video explains the application and different types of dovetail joints, demonstrates how to make a through dovetail joint using hand tools and using a dovetail jig and router, and how to make the related housing joint using a router. Good safety practices are demonstrated throughout. LEARNING OBJECTIVES After viewing the program, students will be able to: ■ Make a through dovetail joint using hand tools. ■ Make a housing joint using a router. ■ Make a dovetail joint using a dovetail jig with a hand-held router. EDUCATIONAL STANDARDS National Standards This program correlates with the following competency standards from the National Center for Construction Education & Research. The content has been aligned with the fol- lowing educational standards and benchmarks from this organization. ■ Explain the role that safety plays in the construction crafts. ■ Demonstrate the use and care of appropriate personal protective equipment. ■ Use hand tools in a safe and appropriate manner. ■ State the general safety rules for operating all power tools, regardless of type. ■ Identify the portable power tools commonly used by carpenters and describe their uses.
    [Show full text]