Mechanically powered saws
Mechanically powered saws mechanically move the teeth past the wood while the saw itself is held stationary. This is accomplished in one of three ways: the teeth are along the perimeter of a flat, circular blade; the blade reciprocates up and down rapidly; or the teeth are along one edge of a continuous band. They are more specifically differentiated as follows:
Back saws
The second category of hand saws keep a thinner blade stiff by reinforcing it with a steel or brass back. Back saws are differentiated by length of blade. While this list is not definitive, they are generally named, from longest to shortest: Mitre Saw, Carcase Saw, Tenon saw, and Dovetail saw. These saws also have a handle that is vertical in relation to the blade. A saw with a straight handle that extends from the top back of the blade is referred to as a Gent's saw. Finally, some Dozuki saws, which are an Eastern-style (cut on the pull stroke)saw have backs and are classified as back-saws.
* One type of hand powered Miter saw (makes precisely angled cross cuts) uses a backsaw.
Mechanically powered savs Back savs
Cuuting tools , Machinery tools SEAGAMES 2009 at 4:32 AM
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