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| image via Wikipedia |
The coping saw is a small tool, a saw blade carried in a
steel frame. It is occasionally called a jig saw. The blade can be removed and
can range in thickness from a threadlike wire to 1/8-inch. width. The blade is
thus fragile and must be used only on thin wood. When an interior cut must be
made, a hole is bored, and the blade is threaded through the hole and then
connected to the frame. On the frame are pawls with slots where the blade fits.
Typically the blade can turn inside the frame. Blades may be flat or spiral:
the spiral blade has the advantage of being able to cut in whatever direction
without turning. For vise work, the
teeth of the coping saw must point toward the handle, but on work held by a saw
horse, it is best to have the points turned away from the handle.
by TipWriter