A customer of mine builds off-road jeeps and swears by the stuff.

He says that you can pound on it with a hammer and it doesn't crack or flake off.

He does warn that you need to paint on top of it if you have any part exposed to sunlight, though.

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1946 Chevrolet 3600 - "Old Number Seven"

Cavalry's Here. Cavalry's a frightened guy with a rock, but it's here.