#power_tool__powertool  a tool driven by a motor
  supertype:  machine  tool
  subtype:  polisher__buffer  a power tool used to buff surfaces
  subtype:  burr.power_tool  rotary file for smoothing rough edges left on a workpiece
  subtype:  drum_sander__electric_sander__sander__smoother  a power tool used for sanding wood; a loop of sandpaper is moved at high speed by an electric motor
  subtype:  power_hammer__powerhammer__hammer  a power tool for drilling rocks
     subtype:  air_hammer__airhammer__jackhammer__pneumatic_hammer__pneumatichammer  a hammer driven by compressed air
     subtype:  electric_hammer  a hammer driven by electric motor
     subtype:  triphammer  a massive power hammer; raised by a cam until released to fall under gravity
  subtype:  planer__plane__planing_machine__planingmachine  a power tool for smoothing or shaping wood
  subtype:  power_drill__powerdrill  a power tool for making holes in hard materials
     subtype:  electric_drill__drill  a rotating power drill powered by an electric motor
     subtype:  pneumatic_drill__pneumaticdrill  a power drill powered by compressed air
  subtype:  power_saw__powersaw__saw__sawingmachine  a power tool for cutting wood
     subtype:  bandsaw  a toothed metal band driven by two wheels
     subtype:  chain_saw__chainsaw__chainsaw  portable power saw; teeth linked to form an endless chain
     subtype:  circular_saw__buzz_saw  a power saw that has a steel disk with cutting teeth on the periphery; rotates on a spindle
        subtype:  portable_saw  a portable circular saw (with a hand grip)
     subtype:  gangsaw  a power saw that has several parallel blades making simultaneous cuts
     subtype:  jigsaw__scroll_saw__fretsaw  fine-toothed power saw with a narrow blade; used to cut curved outlines
     subtype:  sawmill  a large sawing machine
  subtype:  router  a power tool with a shaped cutter; used in carpentry for cutting grooves
  subtype:  stamping_machine__stamper  a power tool that stamps; "a metal stamper"

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