Fig. 1942.
Another method of cutting up a fly cutter by the tool made to the template is shown in [Fig. 1941]. The blank cutter is placed at an angle to an arbor axis, and is cut to shape by the tool. For use it is placed in line with the arbor axis as in [Fig. 1942], the change of position here again giving clearance as shown by the dotted arcs, the inside ones showing the arc the cutter revolved on when it was in the arbor in [Fig. 1938]. Here again, however, the change of position causes the fly cutter to produce a shape slightly different from the template to which the first tool was made, hence the best method is as follows:—
Fig. 1943.
Fig. 1944.