USE/CARE OF HANDTOOLS & MEASURING TOOLS - OD1621 - LESSON 2/TASK 2
procedure is used on the cutting edges and heads of any type chisel or other
The process produces a
hard cutting edge and head, and a softer and tougher center section, better
adapted to withstand shock.
(c) Reshaping Mushroomed Head.
If machinist's or blacksmith's
chisels become mushroomed after much use, the head must be reground to shape
on a grinder wheel. The chisel must be hardened after reshaping the head.
blacksmith's chisels are repaired and replaced as you would a hammer handle.
e. Precautions When Using Chisels.
(1) Keep your mind on your work so that you do not strike yourself or
someone else with a hammer.
(2) Do not carry chisels in your pockets.
(3) Lay chisels down so that you or others cannot be hurt with the
(4) Be sure chisel shanks and hammers are free from grease or oil.
(5) Keep the cutting edge of chisels away from yourself and others
when using them.
(6) Wear goggles when chipping metal and when grinding chisels.
(7) Keep chisel handles in good condition.
Do not use chisels having
mushroomed heads or handle heads.
(8) Do not exert too much pressure against a grinding wheel when
grinding or sharpening chisels.
f. Storage and Care of Chisels. To prevent dulling the cutting edges,
place the chisels in racks or arrange them so that their cutting edges do
not come in contact with other tools or pieces of metal. Chisels used daily
should be cleaned and wiped with an oily cloth before putting them away.
For long periods of storage, apply a rust preventive compound to all metal
parts and store in a dry place.