Emery Wheels
Wheels of solid emery or wooden wheels, to the surface of which emery paste has been applied. The best wheels for watchmakers' use are the solid wheels in which vulcanite is the cementing medium. They may be had from material dealers generally or from dental supply houses, in sizes varying from 1/2x1/8 in. to 3 1/2x3/4 in. A set of three or more of these wheels will prove very valuable adjuncts to the watchmaker's bench for grinding dials to allow freedom of motion for wheels in fitting new dials; for grinding milling cutters, drills, gravers, etc. As purchased from dealers these wheels have a central hole, by means of which they can be mounted for use by the watchmaker as follows: Turn down a piece of No. 30, Stubbs' steel wire, to the size of the opening in your wheel and rivet your wheel firmly upon it, as shown in Fig. 126. It can then be used in your lathe very handily, either with or without water. The best sizes for watchmakers use are 1/2 in., 1 in. and 1 1/2 in. diameter.