slightly squared or rounded, according to the work. Fig. 13 is a
separating tool, which is a little wider at the cutting edge than any
where else, so that it will clear itself as it is forced into the
work.

For brass this tool should be beveled downward slightly. By giving the
point the form shown in Fig. 3 it will be adapted to screw cutting.

Fig. 14 shows an inside tool for the slide rest; its point may be
modified according to the work to be done. Fig. 15 is a side tool for
squaring the ends of shafts; Figs. 16, 17, 18, and 19 represent tools
for brass, Fig. 16 is a round-nosed tool for brass, Fig. 17 a V shaped
tool, Fig. 18 a screw thread tool, and Fig. 19 a side tool. In boring,
whether the object is cored or not, it is desirable, where the hole is
not too large, to take out the first cut with a drill. The drill for
the purpose is shown in Fig. 20, the drill holder in Fig. 21, and the
manner of using in Fig 22. The drill holder, B, is held by a mortised
post placed in the rest support. The slot of the drill holder is
placed exactly opposite the tail center and made secure. The drill,
which is flat, is drilled to receive the tail center, and it is kept
from turning by the holder, and is kept from lateral movement and
chattering by a wrench, C, which is turned so as to bind the drill in
the slot of the holder.

The relative position of the tool and work is shown in Figs. 25, 26,
27, and 28; Fig. 25 shows the position for brass; Fig. 26 for iron and
steel; Fig. 27 the relative position of the engine rest tool and its
work; and Fig. 28 the position of the tool for soft metal and wood.

In all of these cases the point of the tool is above the center of the