USE/CARE OF HANDTOOLS & MEASURING TOOLS - OD1621 - LESSON 2/TASK 2
(3) Do not use cable cutters on spring steel wire, to do so will nick
the cutting edges and possibly misalign the cutters.
(4) Avoid cutting live electrical cables.
When doing work on
existing electrical circuits, make certain the handles of the cutter to be
used are insulated.
(5) Use extreme caution when using any cutter to avoid catching any
part of the body or clothes between the handles as pressure is applied to
them.
(6) Be sure to dry hands and handles of cutters before using, to
prevent slipping. Keep tools clean.
(7) Make sure to clamp or steady the work before cutting to prevent
the cutters from slipping.
d. Use of Glass Cutter and File. A glass cutter actually does not cut
glass; it splits it. If the wheel is sharp and it is drawn over the glass
at the right speed and pressure, it makes a fine score or groove by slightly
crushing or pulverizing the glass under the edge of the wheel. The beveled
sides of the wheel act as wedges which push against the sides of the groove
and pry the glass apart so that a crack is started.
If a crack fails to
start in the cutting, tap the scratch or score with the hall end of the
glass cutter to start a crack. Break off a narrow strip along the edges by
placing the strip into a notch in the cutter and using the handle as a
lever. Glass tubing or rod is cut by nicking the surface with a triangular
file.
(1) Cutting Glass Pane.
Ordinary window glass comes in two
thicknesses, single light and double light. Single light is thinner and the
easiest to cut. Plate glass up to 1/4 inch in thickness can be cut in the
same manner as ordinary window glass. Safety glass, which consists of two
or more glass sheets cemented together by a transparent plastic, requires
special cutting equipment.
(a) Window or Single Light Glass.
1 Place several layers of newspaper or a piece of carpet on a
firm level surface and place the glass pane on the padding.
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