Templets are thin pieces of wood or metal, so formed as to determine the outline of another

Fig. 298. Templet.

piece. The one shown in Fig. 298 and in use in Fig. 222 represents the most common class. They may be of almost any size or shape for work within the capacity of the lathe.

Fig. 298 shows a method of laying out a templet.

First, draw line C------C, representing the axis of the piece, from this lay out the shape required.

After the outline has been determined, you must decide upon the size of the stub to be left at each end and cut off from each end of the templet an amount equal to one-half the diameters of the stubs. This is shown by the dotted lines at A and B. The large stub, A, is at the live-center.

Be careful in drawing the lines, and work the templet carefully to shape, as you are not likely to succeed in fitting the piece to it exactly. If the templet is not quite correct, your piece may be very much out of shape.

In using templets, do not hold them against the work while it is in motion; for if you do, they will very soon become incorrect.