Mass Timber Connections
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Drill Bits 101 I've Used Dowels in a Variety of Woodworking Projects
Drill Bits 101 I’ve used dowels in a variety of woodworking projects having bought myself a pretty decent doweling jig a few years ago. The jig itself came with a twist drill bit for each of the three dowel sizes. For my dowel joinery I often need to drill holes of two different depths; so sometimes it is handy to have two bits of the same diameter with stops set at the different depths. One day I inadvertently was using both a twist bit and a brad point bit and noticed very different results. For example, drilling into end grain was far more difficult with a brad point bit than with the twist bit. All of this got me wondering about the different types of woodworking drill bits. Hence my investigation into the family tree of woodworking drill bits. Note that many drill bits may be multi-purpose, but generally speaking there are different families of bits for plastic, metal(s), tile, and masonry, etc. The basic job of a drill bit of course is to stay centered and not wander, cut the wood to form a round hole, and eject the chips. Seems simple, but not so perhaps, which is why there are so many types of drill bits and even options on lips, lands, flutes, margins, and other design elements – details beyond the scope of Bevel Cut. Of all the types, the common twist drill, invented by Steven Morse in 1863 and covered in US Patent 38119 is the simplest. The V-angle of the tip can vary from 60 to 118 degrees, with the latter being most common in today’s hardware stores according to my own research. -
2010 Directory of Maine's Primary Wood Processors
Maine State Library Digital Maine Forest Service Documents Maine Forest Service 9-14-2011 2010 Directory of Maine's Primary Wood Processors Maine Forest Service Forest Policy and Management Division Follow this and additional works at: https://digitalmaine.com/for_docs Recommended Citation Maine Forest Service, "2010 Directory of Maine's Primary Wood Processors" (2011). Forest Service Documents. 253. https://digitalmaine.com/for_docs/253 This Text is brought to you for free and open access by the Maine Forest Service at Digital Maine. It has been accepted for inclusion in Forest Service Documents by an authorized administrator of Digital Maine. For more information, please contact [email protected]. 2010 Directory of Maine’s Primary Wood Processors Robert J. Lilieholm, Peter R. Lammert, Greg R. Lord and Stacy N. Trosper Maine Forest Service Department of Conservation 22 State House Station Augusta, Maine 04333-0022 School of Forest Resources University of Maine Orono, Maine 04469-5755 December 2010 Table of Contents Introduction ......................................................................................................................... 1 Maine's Primary Wood Processors I. Stationary Sawmills ............................................................................................. 4 II. Portable Sawmills ............................................................................................. 67 III. Pulp and Paper Manufacturers ...................................................................... 106 IV. Stand-Alone -
EM-Tec VS42 Universal Spring-Loaded Vise
Technical Support Bulletin EM-Tec VS42 universal spring-loaded vise Products #12-000220 and #12-000320 Description The EM-Tec VS42 universal spring-loaded vise clamp includes two reversible vise plates and four dowel pins which fit into the top of the brass sliding bar. The maximum clamping capacity between the vise jaws is 42mm. Available with either the standard 3.2mm pin or an M4 threaded hole for mounting on the SEM sample stage. Operation Consider wearing gloves to avoid contamination. • To open the EM-Tec universal spring-loaded vise clamp, pull on the side of the brass sliding bars. • Place the sample between the vise jaws and gently release the sliding bars. • The tension on the 4 springs will hold the sample between the jaws in the middle of the holder. • The universal spring-loaded vice clamp acts as a centering vise. The aluminium vise plates are mounted on the brass sliding bars with brass M3 screws. The reversible vise jaws comprise a smooth side and a side with three small grooves. The grooves are more suitable for small round samples or to hold sample with a rough side. For awkwardly shaped samples, the vise jaws can be removed and 4 dowel pins can be inserted in the brass sliding bar to clamp the sample between the 4 dowel pins. Optional vise jaws are available for large round samples. By using longer M3 screws, the vise jaws can be stacked to double the jaw height from 12 to 24mm. For samples which are thinner than 1mm, an alternative vise type holder with a screw should be considered. -
Fastener Identification Guide • 4.13 KM • Printed in the USA
HEAD STYLES Hex Cap Screw Bugle Hex cap screws feature a washer face on the Button Washer bearing surface, a chamfered point, and tighter body tolerances than hex bolts. Pan Binding Undercut Hex Bolt Similar to hex cap screw, hex bolts do not require a washer face or a pointed end and have a greater tolerance range in the body. Round Head Fillister Socket Head Cap Screw Socket heads feature an internal hexagonal drive DRIVES socket and close tolerances for precision assembly. Flat 82° Cross Recess Button Head Socket Cap Screw Type I FASTENER (Phillips) Button heads feature a dome shaped head, though Flat 100° this feature reduces the tensile capacity. Cross Recess Flat Head Socket Cap Screw Type IA Flat heads feature an 82° countersunk head for Flat Undercut (Pozidriv®) IDENTIFICATION flush connections. Like the button heads, this feature reduces the tensile capacity. Cross Recess Type II (Frearson) Low Head Socket Cap Screw Indented Hex Low heads are similar to standard socket heads, but with a shorter head for applications where clearance Cross Recess Square GUIDE is an issue. This head configuration also reduces the Combo strength capacity. Indented Hex Washer (Quadrex®) NUTS Carriage Bolt A round head bolt with a square neck under the Slotted head. These must be tightened with a nut. Serrated Hex Finished Hex Nuts: Hex Coupling Nuts: Washer Hexagonal shaped nuts with internal screw Designed to join two externally threaded Plow Bolt threads. Finished hex nuts are one of the most objects, usually threaded rod, together. Combination Similar to a carriage bolt, these have a flat head common nuts used. -
Threaded Fasteners
Threaded Fasteners Introduction If you are designing and building a Formula SAE vehicle, threaded fasteners will likely be used to join the various components and systems together and allow the vehicle to function as a unified machine. The reliability of your vehicle is key to realize your potential at the competition. Even though threaded fasteners have been in use for hundreds of years and are in products that we use every day, their performance is dependent on a wide range of factors. This chapter covers some of the main factors that can influence reliability and is intended as an aid in joint design, fastener selection, and installation. The first portion of this chapter covers several design and installation factors that can work together to improve the reliability of your vehicle’s bolted joints. These topics include, the importance of generating and maintaining clamp load, and how clamp load, along with joint stiffness, can work together to prevent self-loosening and improve fatigue performance. The second portion of this chapter reviews how installation method and torque are related to clamp load, and also includes a comparison between common fastener types to aid in selection. The chapter concludes with a short tutorial showing how to obtain Mil Spec information on fasteners and similar hardware. Disclaimer – Multiple factors on each component in a bolted joint affect its performance. Additionally, service requirements for every joint differ. Each joint must be evaluated and tested for its ability to perform the desired function. The information in this chapter provides general background and does not represent how a specific design or piece of hardware will perform. -
Plain & Pre-Glued Dowel Pin FAQ How Do You Determine What Size
Plain & Pre‐Glued Dowel Pin FAQ How do you determine what size dowel to use? The length of the dowel is generally determined by how much dowel can be inserted into the shortest member of the two piece joint. Twice this length is a common rule of thumb for determining dowel length. For example, if your shortest member is 1” thick and you know your safest drilling depth is 3/4”, then a 1‐1/2” dowel should be used. A 1‐1/2” length equates to two times the 3/4” thickness. The longer the dowel, the greater the holding strength. A similar procedure can be used to determine a proper diameter for the dowel. Generally, the diameter of the dowel should be no greater than half the thickness of the stock. For example, if the side panel is 1” thick, then you want to use a maximum 1/2” dowel. Incorrect hole depth or diameter create improper dowel joints by trapping glue or water at the bottom of the hole which is not properly distributed around the dowel. How deep should a dowel pin be inserted to be most effective? The longer the dowel, the greater the strength. The ideal joint has the dowel hole match the length of the dowel on both ends allowing the dowel to be inserted to the bottom of the hole. To avoid “blowout” on side panels, a small void of 2mm or 5/64”, is often left as insurance to collect excess glue or water in addition to allowing for variations in dowel length. -
Inspection of Wooden Vessels
Guidance on Inspection, Repair, and Maintenance of Wooden Hulls ENCLOSURE (1) TO NVIC 7-95 COMPILED BY THE JOINT INDUSTRY/COAST GUARD WOODEN BOAT INSPECTION WORKING GROUP August 1995 TABLE OF CONTENTS ACKNOWLEDGEMENTS A-1 LIST OF FIGURES F-1 GLOSSARY G-1 CHAPTER 1. DESIGN CONSIDERATIONS A. Introduction 1-1 B. Acceptable Classification Society Rules 1-1 C. Good Marine Practice 1-1 CHAPTER 2. PLAN SUBMITTAL GUIDE A. Introduction 2-1 B. Plan Review 2-1 C. Other Classification Society Rules and Standards 2-1 D. The Five Year Rule 2-1 CHAPTER 3. MATERIALS A. Shipbuilding Wood 3-1 B. Bending Woods 3-1 C. Plywood. 3-2 D. Wood Defects 3-3 E. Mechanical Fastenings; Materials 3-3 F. Screw Fastenings 3-4 G. Nail Fastenings 3-5 H. Boat Spikes and Drift Bolts 3-6 I. Bolting Groups 3-7 J. Adhesives 3-7 K. Wood Preservatives 3-8 CHAPTER 4. GUIDE TO INSPECTION A. General 4-1 B. What to Look For 4-1 C. Structural Problems 4-1 D. Condition of Vessel for Inspection 4-1 E. Visual Inspection 4-2 F. Inspection for Decay and Wood Borers 4-2 G. Corrosion & Cathodic Protection 4-6 H. Bonding Systems 4-10 I. Painting Galvanic Cells 4-11 J. Crevice Corrosion 4-12 K. Inspection of Fastenings 4-12 L. Inspection of Caulking 4-13 M. Inspection of Fittings 4-14 N. Hull Damage 4-15 O. Deficiencies 4-15 CHAPTER 5. REPAIRS A. General 5-1 B. Planking Repair and Notes on Joints in Fore and 5-1 Aft Planking C. -
Operating Instructions and Parts Manual 14-Inch Vertical Band Saws Models: J-8201, J-8203, J-8201VS, J-8203VS
Operating Instructions and Parts Manual 14-inch Vertical Band Saws Models: J-8201, J-8203, J-8201VS, J-8203VS JET 427 New Sanford Road LaVergne, Tennessee 37086 Part No. M-414500 Ph.: 800-274-6848 Revision F 09/2018 www.jettools.com Copyright © 2016 JET Warranty and Service JET warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday. Warranty Period The general warranty lasts for the time period specified in the literature included with your product or on the official JET branded website. • JET products carry a limited warranty which varies in duration based upon the product. (See chart below) • Accessories carry a limited warranty of one year from the date of receipt. • Consumable items are defined as expendable parts or accessories expected to become inoperable within a reasonable amount of use and are covered by a 90 day limited warranty against manufacturer’s defects. Who is Covered This warranty covers only the initial purchaser of the product from the date of delivery. What is Covered This warranty covers any defects in workmanship or materials subject to the limitations stated below. This warranty does not cover failures due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear, improper repair, alterations or lack of maintenance. JET woodworking machinery is designed to be used with Wood. Use of these machines in the processing of metal, plastics, or other materials outside recommended guidelines may void the warranty. -
Mechanical Performance of Mortise and Tenon Joints Pre-Reinforced With
Wu et al. J Wood Sci (2019) 65:38 https://doi.org/10.1186/s10086-019-1816-2 Journal of Wood Science ORIGINAL ARTICLE Open Access Mechanical performance of mortise and tenon joints pre-reinforced with slot-in bamboo scrimber plates Guofang Wu1,2, Meng Gong3, Yingchun Gong1,2, Haiqing Ren1,2 and Yong Zhong1,2* Abstract This study was aimed at examining the mechanical performance of mortise and tenon joints reinforced with slot-in bamboo scrimber plates. 27 full-scale specimens were manufactured with engineered wood and bamboo products using computer numerically controlled (CNC) technology, then they were tested under monotonic loading. The initial stifness and moment carrying capacity of joints with diferent reinforcing confgurations were obtained from the established moment–rotational angle relationships. It was found that the initial stifness of the reinforced mortise and tenon joints increased by 11.4 to 91.8% and the moment carrying capacity increased by 13.5 to 41.7%, respectively. The total width and grain orientation of the reinforcing plates had signifcant infuence on the mechanical perfor- mance of the mortise and tenon joints. Fastening the plates to tenon with dowels was benefcial to the mechanical performance of the joints. The embedment length and adhesive type had no signifcant infuence to the structural performance of the joints. This study demonstrated the feasibility of pre-reinforcing mortise and tenon joints in new timber construction, and could assist to promote the application of mortise and tenon joints in modern timber structures. Keywords: Mortise and tenon joint, Pre-reinforcement, Mechanical performance, Bamboo scrimber, Beam to column connection Introduction However, with the development of computer numerically A mortise and tenon joint consists of a tongue that controlled (CNC) manufacturing technology in the late inserts into a mortise cut in the mating piece of timber. -
879812934352Ea6795128ab9b
1 TABLE OF CONTENTS Owner's Personal Record ....................................................................3 Recurve Bow Terminology ....................................................................4 Introduction ...........................................................................................5 Important Safety Information ................................................................6 Required Safe Operating Parameters ................................................10 Bow Length ........................................................................................13 Draw Weight .......................................................................................13 Bow Assembly ....................................................................................14 Installing Limbs ...................................................................................14 Shooting String Installation .................................................................15 Un-stringing your bow ........................................................................17 Pro Series Limb Adjustment Dowel ....................................................18 Hoyt Hardlock Alignment System .......................................................19 Pivot Block Adjustment .......................................................................22 Adjusting Weight.................................................................................23 Adjusting Tiller ....................................................................................24 -
Fastener Guide
Experts in supplying Vendor Managed fasteners and industrial Inventory Programs products to manufacturers and sub-contract On-Site Parts assemblers. Kitting Department 763.535.0400 763.535.0400 Table of Contents Standard Fasteners.................................................................. 3 Hex Bolt Sizes and Thread Pitches Size Chart.............................................................. 4 Standard US Machine Screw Size Chart....................................................................... 7 Sheet Metal Screw Size Chart....................................................................................... 8 Shoulder Bolt Size Chart................................................................................................ 9 Socket Button Head Size Chart.................................................................................... 11 Socket Cap Size Chart................................................................................................. 12 Socket Flat Head Size Chart........................................................................................ 15 US Nuts Size Chart...................................................................................................... 17 SAE Flat Washer Size Chart........................................................................................ 20 USS Flat Washer Size Chart........................................................................................ 21 Screw Eye Size Chart................................................................................................. -
Make Your Own Atlatl and Darts
Make Your Own Atlatl and Darts For thousands of years before the bow and arrow was invented, people all over the world used a spear-thrower called an atlatl. Archaeological evidence shows that people in the Great Basin may have been using atlatls as early as 8,000 years ago. The atlatl uses leverage to let the user to throw a spear (also called a dart) faster and farther. Brought to you by: Archaeology (Antiquities Section) The atlatl is a shaft of wood that is basically acts like an extension of the arm. The end of the dart rests against a hook on the end of the atlatl. To throw it, you fling the atlatl with your forearm and wrist, thrusting the dart forward. A well-made atlatl, used with skill, can throw a dart 100 yards at speeds of nearly 100 miles per hour! This is a replica of an atlatl found in Rasmussen Cave in Nine-Mile Canyon in Utah. The originally is probably more than 3,000 years old. This atlatl is just over 21 inches long. A rock weight in the middle added balance and mass to the atlatl. The deer hide strip might have helped stabilize the atlatl in use, or it might have been a charm or just a decoration. This replica was made by Ray Thompson of Salt Lake City. MAKING YOUR OWN ATLATL FROM A PAINT STIRRER WHAT YOU WILL NEED: 1. An adult to help you 2. Paint stirrers (you can get these at most hardware stores) 3. A saw 4.