Blacksmith's and pipe vises.
Special purpose vises.
(e) Finished work should be held between jaws of soft material or 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.
(3) Care of vises. Keep vises clean at all times; they should be cleaned
and wiped with light oil after using. Never strike a vise with a heavy object and
never hold large work in a small vise, since this practice will cause the jaws to
become sprung or otherwise damage the vise. Keep jaws in good condition and oil
the screws and the slide frequently. Never oil the swivel base or swivel jaw
joint-its holding power will be impaired. When the vise is not in use, bring the
jaws lightly together or leave a very small gap and leave the handle in a vertical