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  2. Circular saw - Wikipedia

    en.wikipedia.org/wiki/Circular_saw

    Tractor-driven circular saw. A circular saw or a buzz saw, is a power- saw using a toothed or abrasive disc or blade to cut different materials using a rotary motion spinning around an arbor. A hole saw and ring saw also use a rotary motion but are different from a circular saw. Circular saws may also be loosely used for the blade itself.

  3. Craftsman (tools) - Wikipedia

    en.wikipedia.org/wiki/Craftsman_(tools)

    Craftsman is a line of tools, lawn and garden equipment, and work wear. Originally a house brand established by Sears, the brand is now owned by Stanley Black & Decker . As with all Sears products, Craftsman tools were not manufactured by Sears during that company's ownership, but made under contract by various other companies.

  4. Radial arm saw - Wikipedia

    en.wikipedia.org/wiki/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. In addition to making length cuts, a radial arm saw may be ...

  5. Table saw - Wikipedia

    en.wikipedia.org/wiki/Table_saw

    Table saw. A table saw (also known as a sawbench or bench saw in England) is a woodworking tool, consisting of a circular saw blade, mounted on an arbor, that is driven by an electric motor (directly, by belt, by cable, or by gears). The drive mechanism is mounted below a table that provides support for the material, usually wood, being cut ...

  6. History of construction - Wikipedia

    en.wikipedia.org/wiki/History_of_construction

    The steam engine combined with two other technologies which blossomed in the nineteenth century, the circular saw and machine cut nails, lead to the use of balloon framing and the decline of traditional timber framing. [26] As steel was mass-produced from the mid-19th century, it was used in the form of I-beams and reinforced concrete.

  7. Miter saw - Wikipedia

    en.wikipedia.org/wiki/Miter_saw

    A motorized miter saw. A miter saw or mitre saw is a saw used to make accurate crosscuts and miters in a workpiece by positioning a mounted blade onto a board. A miter saw in its earliest form was composed of a back saw in a miter box, but in modern implementation consists of a powered circular saw that can be positioned at a variety of angles and lowered onto a board positioned against a ...

  8. Chainsaw - Wikipedia

    en.wikipedia.org/wiki/Chainsaw

    Chainsaw. A chainsaw cutting a small wooden board. A chainsaw (or chain saw[ 1]) is a portable handheld power saw that cuts with a set of teeth attached to a rotating chain driven along a guide bar. Modern chainsaws are typically gasoline or electric and are used in activities such as tree felling, limbing, bucking, pruning, cutting firebreaks ...

  9. Engineering drawing abbreviations and symbols - Wikipedia

    en.wikipedia.org/wiki/Engineering_drawing...

    In a feature control frame ( FCF ), the ⌀ symbol tells you that the tolerance zone for the geometric tolerance is cylindrical. Abbreviations for "diameter" include ⌀, DIA, and D. D. diameter; delta. Abbreviations for "diameter" include ⌀, DIA, and D. For delta usage, see for example "delta notes". DIA[ 2] diameter.