They chain or clamp the frames and section to alignment machines that move the metal. Repairers use a different method on cars that are built without frames. For these cars, repairers measure how much each section is out of alignment. Auto body repairers use metal-cutting guns and gas torches to cut through and remove metal body panels. Then they weld new panels in their place.
Repairers pull out less serious dents with a jack or prying bar.
These also may knock dents out with hand tools or special hammers. To smooth out small dents in the metal, repairers hold a small anvil against one side of the dent while hammering the opposite side. They remove very small pits and dimples with pick hammers and punches. Repairers use different methods when working on plastic panels. With most types of plastic, repairers can heat them with hot water or hot-air welding guns.