Figure 13-33.—Stakes and stake plate.
formed by shrinking. Such parts are shaped with the
aid of hardwood or metal form blocks. These blocks
are made in pairs and specifically for the shape of the
part being formed. Each pair conforms to the actual
dimension and contour of the finished article.
You should cut the material to be formed to size,
allowing about one-quarter inch of excess material for
trim. File and smooth the edges of the material to
remove all nicks caused by the cutting tools. This
reduces the possibility of the material cracking at the
edges during the forming operation.
Place the
material between the form blocks and clamp it in a
vise so that the material will not move or shift. Clamp
the work as closely as possible to the particular area
Figure 13-34.—Preparation for straight bend by hand.
being formed to prevent strain on the form block and
to keep the material from slipping.
13-21
