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  2. Air hammer (fabrication) - Wikipedia

    en.wikipedia.org/wiki/Air_hammer_(fabrication)

    In the 1920s, two pneumatic devices were invented that would permanently change the way metal and stone were hammered. The pneumatic rivet gun was originally developed to set hot rivets on girder bridges and high steel buildings. This tool was later scaled down for sheet metal, as the 1930s saw the advent of monocoque aluminum aircraft. The ...

  3. Rotary tool - Wikipedia

    en.wikipedia.org/wiki/Rotary_tool

    A pneumatic die grinder with a right-angle head. A cordless battery-powered rotary tool used for light tasks. A die grinder or rotary tool is a handheld power tool and multitool used for grinding, sanding, honing, polishing, or machining material (typically metal, but also plastic or wood).

  4. Dremel - Wikipedia

    en.wikipedia.org/wiki/Dremel

    Dremel is known primarily for its rotary tools, such as the Dremel 3000, 4000 and 8200 series, which are similar to the pneumatic die grinders used in the metalworking industry by tool or moldmakers. Dremel later expanded its product range and now produces butane tools , benchtop and hand-held saws and oscillating tools . [ 2 ]

  5. Automatic center punch - Wikipedia

    en.wikipedia.org/wiki/Automatic_center_punch

    An automatic center punch is a hand tool used to produce a dimple in a workpiece (for example, a piece of metal). It performs the same function as an ordinary center punch but without the need for a hammer. When pressed against the workpiece, it stores energy in a spring, eventually releasing it as an impulse that drives the punch, producing ...

  6. Power tool - Wikipedia

    en.wikipedia.org/wiki/Power_tool

    Dremel: Dremel now a brand of Bosch Power Tools United States Germany. Fast-moving multifunctional tools: Duss: Friedrich Duss Maschinenfabrik GmbH & Co. KG Germany: Drilling (hammer drills, chisel hammers, diamond drills) Fein: Fein-Verwaltung GmbH of C. & E. Fein GmbH: Tool for cutting, drilling and grinding (metal construction) Festool

  7. Drill bit - Wikipedia

    en.wikipedia.org/wiki/Drill_bit

    A spade drill bit for metal is a two part bit with a tool holder and an insertable tip, called an insert. The inserts come in various sizes that range from 7 ⁄ 16 to 2.5 inches (11 to 64 mm). The tool holder usually has a coolant passage running through it. [13] They are capable of cutting to a depth of about 10 times the bit diameter.