Elimination of body deformations
Small depressions are straightened with a straightening hammer. At the same time, hold a hand anvil on the other side of the depression. Do not hit the anvil with the hammer too hard, otherwise the tin will bend and will not be smooth. Work starting from the edge to the middle.
Periodically control the leveled surface with your hand until it acquires the desired shape. Fill small surfaces later.
After leveling, carefully remove any remaining rust and old varnish from the repair area using coarse sandpaper (No. 120) stretched over a grinding wheel, or polish with a cloth wheel. Cover nearby decorative films or plastic parts with adhesive tape so that they are not accidentally scratched during polishing.