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Wood screws Oval (below, left) and flat head (below, center) are used for countersinking; round head (below, right) can be Д Г~> removed easily. Typically available from ‘A to 6 inches long; common head types include slotted, Philips, and square |
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Washers Used to help distribute load when using nuts and bolts; lock (center) and split (right) types designed to keep nut from loosening; available in a variety of sizes |
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Toggle damps Quick-acting damps that are fastened to jigs to hold stock in place |
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Threaded insert Knockdown fastener used with screws or bolts to join components; particularly |AY useful in 1L end grain applications |
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Nuts Used with bolts for general fastening of wood; standard hex nut (above, left) provides easy access for turning; wing nut (avove, center) is used where disassembly and reassembly is expected; T-nut (above, right) is used as a knockdown fastener or in situations where bolt is not accessible after assembly; available in a variety of sizes |
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Plastics 5trong, stable, and easily machined, plastics such acrylic, polycarbonate, phenolic sheet, and polyethylene (HOPE) are often used as see-through guards, templates, and insert plates for router tables |
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Common nails Feature grooved shanks for strength and holding power; length typically between 1 and 6 inches |
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Cross dowel Knockdown hardware item allowing jig to be taken apart and reassembled without stripping screw threads; threaded dowel is inserted in one part of jig perpendicular to bolt; bolts range between I and 3 inches |
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Plastic knobs and handles For controlling jigs during operations; offer comfortable gripping surface; nylon washers reduce vibration |
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bolts f Used with nuts for fastening wood; carriage bolt (near right) features square neck to keep bolt from rotating, hanger bolt (far right) features machine threads on one end and wood screw threads on the other, sizes typically range from 1A to 6 inches in length [ and Ato% inch in diameter |
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Pneumatic damp Uses air pressure to secure workpieces to jigs; damping pressure adjustable from 20 to 160 pounds; variety of clamping arms available for a range of applications |
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Cam damp Used to secure workpiece in jig; turn handle to increase damping pressure |
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Miter bar Fits standard 3A" x %" miter gauge slot; serves as foundation for a number of useful jigs including a table saw crosscut jig, a miter jig, and a feather- board |
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Many hardware stores and woodworking supply houses offer specialized hardware for shop-made jigs and fixtures. It is a good idea to have a supply of jig hard |
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ware in a variety of sizes on hand in your shop, since spending too much time making a jig defeats part of its purpose. The items above provide a basic |
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list of essential jig hardware; for more specific applications, check out business and trade directories as well as manufacturers and suppliers of industrial products. |
THE ART OF WOODWORKING
