WORKSHOP GUIDE

 

INVENTORY OF JIG HARDWARE

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

 

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

 

Toggle damps

Quick-acting damps that are fastened to jigs to hold stock in place

 

Threaded insert

Knockdown fastener used with screws or bolts to join compo­nents; par­ticularly |AY useful in 1L end grain applications

 

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

 

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

 

Common nails

Feature grooved shanks for strength and holding power; length typically between 1 and 6 inches

 

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

 

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

 

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

 

Cam damp

Used to secure workpiece in jig; turn handle to increase damping pressure

 

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

 

SOURCES FOR JIG HARDWARE

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

 

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

 

list of essential jig hardware; for more spe­cific applications, check out business and trade directories as well as manufacturers and suppliers of industrial products.

 

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THE ART OF WOODWORKING