Making Medieval Style Arrows
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On the Mechanics of the Bow and Arrow 1
On the Mechanics of the Bow and Arrow 1 B.W. Kooi Groningen, The Netherlands 1983 1B.W. Kooi, On the Mechanics of the Bow and Arrow PhD-thesis, Mathematisch Instituut, Rijksuniversiteit Groningen, The Netherlands (1983), Supported by ”Netherlands organization for the advancement of pure research” (Z.W.O.), project (63-57) 2 Contents 1 Introduction 5 1.1 Prefaceandsummary.............................. 5 1.2 Definitionsandclassifications . .. 7 1.3 Constructionofbowsandarrows . .. 11 1.4 Mathematicalmodelling . 14 1.5 Formermathematicalmodels . 17 1.6 Ourmathematicalmodel. 20 1.7 Unitsofmeasurement.............................. 22 1.8 Varietyinarchery................................ 23 1.9 Qualitycoefficients ............................... 25 1.10 Comparison of different mathematical models . ...... 26 1.11 Comparison of the mechanical performance . ....... 28 2 Static deformation of the bow 33 2.1 Summary .................................... 33 2.2 Introduction................................... 33 2.3 Formulationoftheproblem . 34 2.4 Numerical solution of the equation of equilibrium . ......... 37 2.5 Somenumericalresults . 40 2.6 A model of a bow with 100% shooting efficiency . .. 50 2.7 Acknowledgement................................ 52 3 Mechanics of the bow and arrow 55 3.1 Summary .................................... 55 3.2 Introduction................................... 55 3.3 Equationsofmotion .............................. 57 3.4 Finitedifferenceequations . .. 62 3.5 Somenumericalresults . 68 3.6 On the behaviour of the normal force -
Making Arrows Ronald A
Fact Sheet 6 Making Arrows Ronald A. Howard Jr.* Many archers enjoy making increase arrow mass. Wooden been exposed to the graphite their own arrows because it shafts must be lacquered or fibers. Those fibers are hard, allows them to exercise painted full length to protect stiff and fine. They survive personal quality control, add them from moisture. cooking well and can cause injury if swallowed. Many special features, personalize the Fiberglass shafts are lighter than target archers, particularly arrows in other ways or add to wooden shafts of the same spine those shooting bows equipped their shooting enjoyment. weight. They remain relatively with overdraws, prefer graphite Making arrows involves straight, and they can be matched shafts. several steps, but it is not in spine and arrow mass much difficult. High quality arrows better than wooden shafts. Aluminum shafts have been the can be made with care and Although fiberglass is a tough standard of both target archers attention to detail. material, these shafts are subject and bowhunters for many Shaft Selection to splitting on impact. They also years. The shafts can be made tend to shatter or splinter if to very close tolerances in a The first step is selecting the variety of alloys, offering easy shaft type and size desired. struck along their length. Shafts with internal damage may even matching in spine and weight. Arrow shafts are available in Aluminum shaft materials may wood, fiberglass, graphite, shatter during a release. Fiberglass has been an excellent be obtained in inexpensive soft aluminum and graphite- alloys that are easily bent or aluminum combinations. -
Coaches Manual
Lviv State University of Physical Culture named after Ivan Boberskyj Department of shooting and technical sports Subject "Theory and Methodology of the Selected Sport and Improvement of Sports Skill – archery" for 4 courses students LECTURE: "TERMINOLOGY / GLOSSARY IN ARCHERY" by prof. Bogdan Vynogradskyi Lviv – 2020 TERMINOLOGY / GLOSSARY Actual draw length: The personal draw length Barrelled arrow: An arrow that has a greater of the archer measured at full draw, from the cross section in the middle and tapers down at bottom of the slot in the nock to the pivot point both ends. of the grip plus 1 3/4 inch (45mm), which is the Basic technique: The fundamental technique of back edge (far side of the bow) on most bows. shooting a bow and arrow. Usually the style Actual arrow length: The personal arrow taught during the introduction to archery, length of the archer, measured from the bottom forming the basis for consistent shooting. slot of the nock to the end of the shaft (this Belly (of bow): The surface of the bow facing measurement does not include the point/pile); the archer during shooting. Also known as the with this end of the shaft at 1 inch (25mm) in “face” of the bow. front of the vertical passing through the deepest point of the bow grip or the arrow rest. Black: The fourth scoring colour on the Indoor/Outdoor target face, when counting from Actual draw weight: The energy required to the centre of the target. draw the bow to the actual draw length (commonly measured in pounds). -
The Arrow Shafts Is Pseudosasa Japonica Or Commonly Called Japanese Arrow Bamboo
The Japanese Arrow By Godai Katsunaga Intorduction The Ya, or arrow of Japan and was between 34 and 38 inches in length, made of fire hardened bamboo shafts and had a steel arrow head., During this period and earlier arrows used in combat were often marked to identify who owned them, this allowed samurai to get the proper credit for killing an opponent. Period Construction The bamboo used for the arrow shafts is Pseudosasa japonica or commonly called Japanese arrow bamboo. This bamboo grows in slender culms that are packed tightly together, forming a dense hedge, with large, dark green foliage. It is a tough and versatile bamboo that will thrive in shade and in sun while growing to about 15 foot tall and was common throughout Japan. Farmers and other workers harvested the bamboo in the early winter when the plants saps were down. To get the required diameter need to make arrows the plants that were between two and three years in age were preferred. After harvesting, the best bamboo was hand selected and ideally stored for about a year for drying, allowing most of the moisture in the plant material to evaporate. Preparation of each shaft included having the nodes shaved off and then softening the shaft by placing it in hot sand prior to straightening it by hand. After the shafts were straightened, they were exposed to high heat to remove any remaining moisture and harden the natural sugars, creating a stronger bond of the natural fibers; this was known as fire hardening. Fletching was done with hawk, eagle, crane or pheasant tail feathers and could be either three or four flights depending on the arrow head that would be mounted. -
WORKSHOP 6 Bookcase Project II Routing Dadoes and Rabbets
WORKSHOP 6 Bookcase Project II Routing Dadoes and Rabbets, Curve Cutting, Sanding & Screwed and Plugged Joinery Date/Time: Saturday, Xtember tbd, 9 am to 12 noon Location: Mentor’s Shop Mentors: tbd Content: Follows FineWoodworking.com video “Getting Started in Woodworking” Season 2, Session 4, Rabbets and Dadoes with a Router; Session 5, Cutting Curves; Session 6, Sanding the Bookcase Parts; & Session 7, Joinery with Screws and Plugs. Description: Cutting Rabbets and Dadoes with a Router; Dadoes are square notches cut into the surface of a piece of lumber that hold the end of a joining board. They are perfect when building shelving or cabinetry as a way to join shelves and partitions. For this bookcase project, the dado joinery is reinforced with screws, although that added strength isn't essential to the joint. A simple but foolproof T-Square jig is built to assist in cutting the dadoes. This type of jig is designed to cut exactly 90 degrees to one edge, which is perfect for our shelf dadoes. You will also need a straight router bit. Ours is 3/4-in. diameter because our lumber measures that same thickness. Rabbets are similar to dodoes and groves in that they can go in the direction of the grain or across it. However, Rabbets are notches cut into the edge of a board. A rabbet is used to attach the back panel to the bookcase Laying Out, Cutting and Smoothing Curves; A changing radius curve isn't a section of a circle. This type of curve can be drawn with a variety of drawing tools, including french curves and battens. -
World Crossbow Shooting Association - TARGET, STANDARD, FREESTYLE & MEDIEVAL CROSSBOW RULES
World Crossbow Shooting Association - TARGET, STANDARD, FREESTYLE & MEDIEVAL CROSSBOW RULES WORLD CROSSBOW SHOOTING ASSOCIATION SHOOTING RULES FOR TARGET, MEDIEVAL, STANDARD, FREESTYLE CROSSBOWS AND GENERAL SHOOTING RULES. EFFECTIVE 1st January 2019 Effective, 1st January 2019 Page: 1 World Crossbow Shooting Association - TARGET, STANDARD, FREESTYLE & MEDIEVAL CROSSBOW RULES INDEX Clause Item Page No INDEX ................................................................................................................................................................................. .................. 2 DEFINITIONS ...................................................................................................................................................................................... 6 SECTION 1. WORLD CHAMPIONSHIPS, REGINAL CHAMPIONSHIP, JUDGING, RECORDS, ASSISTED SHOOTERS 1 PRECEDENCE, INTERPRETATION AND AMENDMENTS ..................................................................................................... 9 2 WORLD CHAMPIONSHIPS ...................................................................................................................................................... 9 2.1 Outdoor Target ................................................................................................................................................................ 2.2 3D ................................................................................................................................................................................... -
Tips & Tricks for Project Boards
Tips & Tricks for Project Boards What are project boards? Project boards are pre-finished, smaller, easy-to-transport, easy-to-store, easy-to-handle craft and hobby boards, available in a variety of styles and colors, excellent for a wide range of DIY home projects. Understanding project board finishes Charred – Our method of charring wood uses the Japanese technique of shou-sugi-ban to create artfully burned boards intended to create unique home décor projects, accent walls, crafts, hobbies and more. Rustic – These project boards are perfect for your next reclaimed-wood project. It's new lumber that has been distressed, primed and painted to have the authentic look and texture of vintage, rough-sawn, rustic barn wood. Getting a clean edge when sawing project boards Don’t own a saw? Ask a sales associate if complementary cutting is available. Most stores will cut as many pieces as you’d like to any dimensions you need. Feel free to bring your project instructions along so you’re ready to take advantage of this service when and where it’s offered. The professionals are there to help! All the cuts you need to make on your project boards can be made with a circular saw. A miter saw and table saw work too – and can save time on large jobs – but the circular saw is your Swiss army knife of cutting. Whichever saw you choose, make sure you’re using one with sharp carbide teeth. A high number of sharp teeth – at least 80 – will ensure clean cuts, while dull blades are more likely to chew up the edges of your wood. -
Tenpoint Crossbow Technologiestm OWNER's General Instruction Manual
TenPoint Crossbow TechnologiesTM OWNER’s GENERAL INSTRUCTION MANUAL To prevent injury to yourself or others, or damage to your crossbow, read this manual along with all other operating and safety instructions included in your crossbow package before assembling, loading or using the crossbow. THIS MANUAL COVERS: Safety Instructions 1-3 Cocking & Loading 3-4 Unloading Your Crossbow 4 Using the Correct Arrow 5-6 Sighting Your Crossbow 6-9 Crossbow Maintenance & Care 9-10 Crossbow Troubleshooting 10-12 Returning Your Crossbow for Service 12 String & Cable Adjustment Chart 13 String & Cable Specifications 14 Notes 14 Limited Operational Warranty 15 TenPoint Crossbow Technologies® 1325 Waterloo Road Mogadore, OH 44260-9608 330.628.9245 www.tenpointcrossbows.com WARNING: (READ FIRST) To prevent injury to yourself or others, or damage to your crossbow, read this manual along with all other operating and safety instructions included in your crossbow package before assembling, loading or using the crossbow. SAFETY INSTRUCTIONS Follow these strict and absolute safety rules when cocking, loading, pointing, and shooting your crossbow. • Install the GripGuard on thumbhole-style stocks prior to sighting-in or shooting your crossbow (not applicable on the Vapor or Stealth SS). DANGER Note: If you have misplaced or lost the GripGuard, contact TenPoint at www.tenpointcrossbows.com or by calling 330-628-9245 immediately for a replacement. • Never allow your fore-grip hand’s fingers or thumb to move above the barrel’s flight deck or into the bowstring or cables’ release path (photos 1, 2 & 3). If you do, you will injure yourself severely when you fire your crossbow. -
Sanding Block Plan.Pdf
Project: Sanding block plan Page 1 of 25 Sanding blocks plan Sanding the surfaces is one of the most important operations that needs to be done on wooden parts before the finishing. At the same time, sanding is time-consuming and one of the less interesting parts of woodworking. Besides that, during sanding you should keep in mind that any scar or scratch, regardless of its size, can show up after finishing coats of stain or varnish are applied. The importance of sanding is that this procedure removes hand tool or machine tool marks and smooths the surface of wood. This allows the reflective properties of the finishing materials to equalize and bring out the full beauty of the wood grain. By taking the time and care, using correct procedures and good selected grades of abrasives, the outcome will be finish of perfect quality and appearance. In professional workshops, sanding is done with power sanders (belt sander, pad sander or drum sander) or with sanding machines. In small and less equipped workshops, sanding is still done mainly by hand. Hand sanding also must be done on parts with complicated or complex curved surface as well as on small surfaces. Most woodworkers even after sanding with sanding machines and power sanders do the final sanding by hand. For the hand sanding, one of the irreplaceable tools is sanding block. A sanding block makes it easier to hold the sandpaper, maintain flatness of the surface and prolonges life of the sandpaper. Surface on the sanding block that sits on the sandpaper should be slightly resilient. -
Equipment: This Includes, but Is Not Limited To: • Scroll Saw – Very Important, If You Want to Go the Cheaper Route, Get a Coping Saw
To start, thank you all for your kind comments concerning my work, I really appreciate it. In this document I will try to show you all the “secrets” to making a custom razor handle, including how I do inlays. I will detail the step-by-step process and even reveal my favorite suppliers and equipment. If you ever thought, “I’d like to make MY own custom handle and not buy one from Mike”, then here is your chance. I’m not concerned about creating competition, if someone else wants to take up the torch and do this for a living then by all means knock yourself out. I enjoy handle making as a hobby, granted I promote it like a business, but that is only because it is such a small niche market that if I didn’t I would only be making handles for myself and would run out of projects pretty quick. -Mike- Equipment: This includes, but is not limited to: • Scroll saw – very important, if you want to go the cheaper route, get a coping saw. You need something that can handle curves. Dremel, Delta, Rigid, and Hawk are all excellent choices. Mine is a Rigid ($180). $80 - $400 • Band saw – not necessary, but nice. A 10” is sufficient. $59 - $150 • Dremel tool – get one! Besides the scroll saw this is the most important tool you will own. Dremel now has a cordless that is variable speed up to 30,000 RPM. It is awesome. I think it is called the Ion, or something, it has a Lithium Ion battery. -
Myriad Systems
Myriad Systems Installation Instructions and Details Contents Page General Notes 2 Typical System Perspective 3 Panel, Hardware & Trim Details 4-6 Hardware & Trim Fabrication Details 7-9 Installation Procedures 10-12 Installation with lights Procedures 13-15 For technical assistance, or if you have questions concerning your order, contact; Marlite 202 Harger St. Dover, Ohio 44622 330-343-6621 800-377-1221 [email protected] www.marlite.com Form # DC33-05081 Effective Date: 7/07 Page 1 of 15 Myriad Systems General Notes HIGH-HUMIDITY AREAS ; Many Myriad Panels are subject to the effects of moisture. DO NOT USE IN KITCHEN, REST ROOM OR OTHER HIGH-HUMIDITY AREAS. TOOLS REQUIRED ; Regular carpentry tools, such as a level, block plane, sanding block, drill, table saw or circular saw with fine-toothed carbide blade, chalk line, hack saw, tape measure, file, miter box, square, 4’-6’ or laser alignment tool and flat screwdrivers. CAUTION ; Be sure to use the proper safety guards required when cutting panels and trim. Also, wear safety glasses or face shields and hand protection. NOTE - Metal veneer products may produce sparks when cutting. Take proper precautions for dust removal. WALL PREPARATION ; Structural walls should be finished with building completely closed. Walls must be thoroughly dry before panels are applied. Panels must be applied over a smooth, solid, flat backing such as plaster, drywall or plywood. A vapor barrier should be use between backer and studs to discourage warping. Protect existing surfaces with drop cloths. PREPARATION/HANDLING TIPS ; Open cartons and carefully inspect all panels. Due to texture and manufacturing techniques, some panels may vary in color, consistency and pattern. -
Blazer Vanes How to Remove Arrow Wraps Cleaning Arrow Shafts
Here are the answers to the most commonly-asked questions about Bohning Archery products, including information about fletching arrows, fletching Blazer vanes, the Bohning Blazer jig, arrow wraps, quiver topics, and more. If you have a question that isn't answered here, please contact us for assistance. Blazer Vanes Do Blazer vanes work with broadheads? Blazer vanes are designed to be used with fixed and mechanical broadheads. They also work very well with field points and can be used for target shooting. How should Blazer vanes be fletched? Blazer vanes should be fletched in the same location as any other vane. We recommend a three-degree right helical, using our Blazer Helix Jig or Helix Tower Fletching Jig ™; or a two-degree offset, using our Pro-Class Fletching Jig. How to Remove Arrow Wraps What are the best ways to remove ArroWraps brand arrow wraps from a shaft? There are different options for removing ArroWraps: • Soak the ArroWrap in hot tap water for 5 minutes, and then peel it off. • Heat the ArroWrap with a hair dryer and then peel it off. • Scrape the ArroWrap off the shaft using Bohning's Stripper tool. Always clean the shaft well after removing an ArroWrap. How can vanes or feathers be replaced without damaging a shaft that has an ArroWrap brand arrow wrap or crest? Unfortunately, vanes or feathers cannot easily be replaced without damaging the crest. Cleaning Arrow Shafts What is the best method for cleaning arrow shafts? Clean arrow shafts by scrubbing with an abrasive pad (such as Scotch Brite®), using water and a good degreasing soap, such as Bohning SSR Arrow Shaft Surface Cleaner.