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Radial Arm Saw. 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.
A rotary reciprocating saw is a type of saw that spins a cutting implement around a rotary axis, instead of thrusting it along a linear axis. The first use of such devices was in medicine , where cutting through bone warranted the need for a saw with minimal stroke length, and a cutting action that could be implemented through depth cut rather ...
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.
A jigsaw is a reciprocating saw that can cut irregular curves, such as stenciled designs, in wood, metal, or other materials. Jigsaws first emerged in the 19th century [1] and employed a treadle to operate the blade, which was thin and under tension, being secured at both ends to an oscillating frame. This kind of saw is now usually called a ...
A splitter is a stationary blade of similar thickness to the rotating saw blade mounted behind it to prevent a board from pinching inward into the saw kerf and binding on the saw blade, potentially causing a dangerous kickback. [7] Like a riving knife, its thickness should be greater than the body of the saw blade but thinner than its kerf. [7]
L.A. County Dist. Atty. Nathan Hochman announced looting charges Monday, and also said one man was charged with arson for starting a blaze in an Azusa park.
Raymond Elmer DeWalt (October 9, 1885 – May 8, 1961) was an American inventor and entrepreneur, who invented the radial arm saw in 1922. In 1924, he founded DeWALT Products Company in Leola, Pennsylvania, to manufacture and sell the “Wonder-Worker” (his name for the radial arm saw). As the company was reaching an early pinnacle of success ...
Scroll saws are classified according to the size of their throat, which is the distance from the blade to the rear frame of the saw. The throat depth determines how large a piece of wood can be cut. Smaller saws have a throat of as little as 12 inches (300 mm), while commercial saws can approach 30 inches (760 mm).