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First lessons in metal-working (1890)

Compton, Alfred G. (Alfred George), 1835-1913 · New York : J. Wiley & Sons · leaf 141

An illustration from First lessons in metal-working, 1890, leaf 141
127 DRILLING AND SAWING. 83). They therefore cut under the metal, some¬ what as a chipping-chisel does, removing the metal in small chips, like the saw dust from a wood-saw. Its teeth have no “ set,” as those of wood-saws generally have, but are sometimes made a little thicker than the back of the… … of the teeth lightly. This not only spreads them out sideways and gives the tool the extra thick¬ ness on the edge which makes it run freely, but at the same time brings the points of the teeth into a straight line. This is very essential to the proper working of a saw, whether in wood or in metal.…

Metal-work

Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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