#sheet_metal__sheetmetal  sheet of metal formed into a thin plate
  supertype:  #flat_solid__sheet  a flat artifact that is thin relative to its length and width
  subtype:  #corrugated_iron  usually galvanized sheet iron or sheet steel shaped into straight parallel ridges and hollows
  subtype:  #flashing  sheet metal shaped and attached to a roof for strength and weatherproofing
  subtype:  #foil  a piece of thin and flexible sheet metal; "the photographic film was wrapped in foil"
     subtype:  #aluminum_foil__aluminium_foil__aluminiumfoil__tin_foil__tinfoil  foil made of aluminum
     subtype:  #chaff  foil in thin strips; ejected into the air as a radar countermeasure
     subtype:  #gold_foil  foil made of gold
        subtype:  #gold_leaf  a very thin form of gold foil
     subtype:  #tinfoil__tin_foil__tinfoil  foil made of tin or an alloy of tin and lead
  subtype:  #tin_plate__tinplate  thin sheet metal (iron or steel) coated with tin to prevent rusting; used especially for cans and pots

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