A radial arm saw is a cutting machine consisting of a circular saw mounted on a sliding horizontal arm. Invented by Raymond DeWalt in 1922, the radial arm saw was the primary tool used for cutting long pieces of stock to length until the introduction of the power miter saw in the 1970s. In addition to making length cuts, a radial arm saw may be co...
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http://en.wikipedia.org/wiki/Radial_arm_saw
(from the article `saw`) Among the machines utilizing a rotating steel disk with peripheral teeth, the radial-arm saw is one of the most useful. The motor-driven blade is ...
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http://www.britannica.com/eb/a-z/r/3
A radial arm saw is a power tool consisting of a rotating blade and motor, like a portable circular saw, which is suspended from a long, adjustable arm over a fixed cutting surface. The blade-motor assembly is connected to the arm by a yoke that allows multiple degrees of rotation. This enables the ...
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http://www.daviddarling.info/encyclopedia/R/AE_radial_arm_saw.html
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