HAMMER AND DOLLY SET
Probably the most basic way to massage sheetmetal is with a good set of hammers and metal dollies. The dolly is placed behind the metal as a backing brace while the damaged area is smoothed with the appropriate-face hammer. Using Grandpa's claw hammer for pounding out dents is not only cheesy, but it can be dangerous as well. Use only hammers designed for striking metal.
Price range: $20 to $270