USE/CARE OF HANDTOOLS & MEASURING TOOLS - OD1621 - LESSON 2/TASK 1
TYPES OF CLAMPS.
(5) Finished work should be held between jaws of soft metal, such as
copper, brass, lead, or plastic. A piece of rawhide or soft leather laid
over the vise jaws will prevent damage to highly polished surfaces.
e. Use of Clamps.
(1) When using the hand screw clamp, keep the jaws parallel to apply
even pressure along the work and to properly hold the pieces of work
together (figure 44 on the following page).
(2) When soft material can be damaged by the jaws, soft material
should be placed over the face of each jaw.
(3) Use rawhide or soft leather to protect highly polished surfaces.