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  2. Automatic center punch - Wikipedia

    en.wikipedia.org/wiki/Automatic_center_punch

    The automatic center punch mechanism has been used for a wide variety of other applications. These include Marking and starting a hole for drilling without the bit "walking" out of alignment; Letter stamp sets; Glass-breaking tools used in rescue work and a common tool for a car thief. Impact tool for hardness testing [21]

  3. Ironworker (machine) - Wikipedia

    en.wikipedia.org/wiki/Ironworker_(machine)

    This particular machine stands over 6 ft (1.8 m) tall and can shear, notch, and punch precision holes in plate steel up to 5/8 in (15 mm) thick. An Ironworker is a class of machine that can shear, notch, and punch holes in steel plate and profiles. Ironworkers generate force using mechanical advantage or hydraulic systems. [1]

  4. Annular cutter - Wikipedia

    en.wikipedia.org/wiki/Annular_cutter

    An annular cutter (also called a core drill, core cutter, broach cutter, trepanning drill, hole saw, or cup-type cutter) is a form of core drill used to create holes in metal. An annular cutter, named after the annulus shape , cuts only a groove at the periphery of the hole and leaves a solid core or slug at the center.

  5. Punch press - Wikipedia

    en.wikipedia.org/wiki/Punch_press

    Turret type punch press machines have a table or bed with brushes or rollers to allow the sheet metal workpiece to traverse with low friction. Brushes are used where scratches on the workpiece must be minimized, as with brushed aluminium or high polished materials. The punch press is characterized by parameters such as: Frame type

  6. Knockout punch - Wikipedia

    en.wikipedia.org/wiki/Knockout_punch

    Chassis punches: assorted sizes round and square Chassis punches: assorted sizes round and square disassembled. In metalworking, a knockout punch, also known as a chassis punch, panel punch, Greenlee punch, or a Q-max, [1] is a hand tool used to punch a hole through sheet metal. It is a very simple tool that consists of a punch, die, and screw.

  7. Harbor Freight Tools - Wikipedia

    en.wikipedia.org/wiki/Harbor_Freight_Tools

    In 2023 and 2024, Harbor Freight Tools was certified as a Great Place to Work. [5] According to the Great Place to Work Institute, 90% of employees at Harbor Freight Tools say it is a great place to work compared to 57% of employees at a typical U.S.-based company.