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A reciprocating saw is a type of handheld, small, machine-powered saw, in which the cutting action is achieved through a push-and-pull ("reciprocating") or back-and-forth motion of the blade. The original trade name, Sawzall , is often used in the United States , where Milwaukee Electric Tool first produced a tool of this type in 1951.
Steel cut-off saw for workshop use Cutting heavy steel cable with a Husqvarna freehand saw US Navy diver preparing to use an abrasive saw for underwater salvage. An abrasive saw, also known as a cut-off saw or chop saw, is a circular saw (a kind of power tool) which is typically used to cut hard materials, such as metals, tile, and concrete.
All sawmills use ripsaws of various types including the circular saw and band saw.Historically sawmills used one or more reciprocating saws more specifically known as an "up-and-down" or "upright saw" which are of two basic types, the frame saw or a muley (mulay) saw [2] which is similar to the hand powered pit saw.
DWC is also practical and less expensive than some other cutting techniques, for example, thin diamond wire cost around 10-20 cents per foot ($0.7/m) in 2005 for 140 to 500 micrometer diameter wire, to manufacture and sells around $1.25 a foot ($4.10/m) or more, compared to solid diamond impregnated blade cutters costing thousands of dollars.
Rip cuts are commonly made with a table saw, but other types of power saws can also be used, including a radial arm saw, band saw, and hand held circular saw.In sawmills the head saw is the first rip-saw a log goes through, which is sometimes a gang-saw, and then the cants may be resawn using other saws and then edged in an edger and sometimes cut to length by a crosscut saw.
Circular saw with a diamond blade for cutting asphalt and concrete. The rotary motion of a circular saw lends itself to cutting hard materials like concrete, asphalt, metal, tile, brick, and stone with an abrasive saw such as a tile saw. Diamond blades and cut off wheels are commonly used in these applications.
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