Fig. 1930.
This tendency, however, is resisted by the pressure on the side a of the slot, which acts, as already stated, to push the cutter back. In starting the cutter therefore, it is necessary to do so at that end of the slot that will cause the deepest cut to act in the direction to retard the feed. Suppose, for example, that the heaviest or deepest cut, instead of being on the side a of the slot, as in [Fig. 1929], was on the side b, and in that case it would be necessary to start the cut from the other end of the slot as in [Fig. 1930], the arrow c denoting the direction of feed.
Fig. 1931.
Fig. 1932.
