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The following year, 2016, brought three new metal cutting saws, including the first 8-inch worm drive optimized for metal, a 12-inch dry cut saw and a 14-inch abrasive chop saw. [ citation needed ] In addition to metal cutting, SKILSAW also announced a saw for fiber cement in 2015 [ 7 ] and the first worm drive saw for concrete in 2016. [ 8 ]
Cold saw blades are used to cut metal using a relatively slow rotational speed, usually less than 5000 surface feet per minute (SFM) (25 m/s), and a high chip load per tooth, usually between .001"–.003" (0.025–0.08 mm) per tooth. These blades are driven by a high power motor and high-torque gear reduction unit or an AC vector drive.
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.
The upper and lower blades are the piece of machinery that actually do the cutting, while the gauging device is used to ensure that the workpiece gets worked where it is supposed to be. Close-up of upper blade, lower blade, backgauge and work-holding device of a Gasparini guillotine shear. The design of press tools is an engineering compromise.
Typical full-size hacksaw frame, with 12" blade. A hacksaw is a fine-toothed saw, originally and mainly made for cutting metal. The equivalent saw for cutting wood is usually called a bow saw. Most hacksaws are hand saws with a C-shaped walking frame that holds a blade under tension.
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.