Figure 4-56. Using Carriage Clamp
Do not use wrenches or bars to tighten
clamps. Excessive pressure will result
in damage to the item being clamped.
Tighten the clamp against the surface.
Care. Observe the following practices for the
care and upkeep of C-clamps:
Clean threads and swivel with a rag, and
lubricate with a light coat of oil.
Store on a rack, on pins, or in a tool box.
For long storage periods, apply a rust-
4-9. Cold Chisels. A chisel is a tool having a cutting
edge at the end of a metal blade and is used in
dressing, shaping, and working metal. The cold chisel
derives its name from the fact that it can be used to cut
metal that has not first been softened by heating. It is
usually made of carbon steel with a tempered cutting
Types. The most common types of cold chisel
are the flat, cape, roundnose, and diamond types,
shown in figure 4-57.
Flat chisel. The flat chisel is used to split
nuts, chip castings, and cut rivets and thin metal sheets.
Cape chisel. The cape chisel is used for
special jobs like cutting keyways, narrow grooves, and
Figure 4-57. Chisels