Figure 9-29.--Using an indexing attachment.
be engraved is held in this attachment and may be
indexed for any number of divisions available on the
plate. Figure 9-29 shows a micrometer collar being held
for graduation and engraving.
You will use a forming guide (sometimes called a
radius plate) to engrave cylindrical surfaces. The
contour of the guide must be the exact opposite of the
work; if the work is concave the guide must be convex
and vice versa. Mount the forming guide on the
forming bar. (See fig. 9-29.) When the spindle floating
mechanism is released, the spindle follows the contour
of the forming guide.
work such as face dials. It is similar to the rotary table
used on milling machines. It is mounted directly on the