Shaping saw teeth
The teeth must be shaped with a saw file to regulate their size and shape. The object is to maintain an even “pitch” to each tooth. Pitch is the angle at which the front of the tooth leans toward the toe of the saw. Try to keep to the original pitch of the saw, which may be up to 14 degrees for a cross cut saw, moving back to upright for a rip saw. The angle between each tooth of any saw is a constant 60 degrees. Lower the saw between two strips in
the vice as near as possible ' to the teeth. Choose a saw file which is just over twice the depth of the tooth. Place the file in the first gullet, holding it horizontally
and at right angles to the blade. Maintain the correct pitch while holding the file in one hand and the tip between thumb and finger of the other. File with even forward strokes. File each gullet in. turn until all the flats are removed and the teeth are uniform in shape. Any burrs produced on one side of the blade can be removed by a light dressing with an oilstone.
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Press, 9 December 1982, Page 25
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200Shaping saw teeth Press, 9 December 1982, Page 25
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