Never attempt to sharpen taps or dies. Sharpening
wrenches to loosen and tighten adjusting screws and
of taps and dies involves several highly precise cutting
bolts. Figure 1-43 illustrates typical threading sets for
processes which involve the thread characteristics and
pipe, bolts, and screws.
chamfer. These sharpening procedures must be done
Figure 1-41.-Diestocks, diecollet, and tap wrenches.
Figure 1-40.-Types of adjustable dies.