Quote:
Originally Posted by 97 SL320
When metal is dented, it stretches thinner. When the dent is pounded out the extra metal needs to go somewhere. That is usually done by heating the center of a depression / peak red hot and letting the metal collapse on it's self.
He might be accomplishing shrinking by leaving the surface slightly dimpled like the surface of a golf ball. In any event, he uses the barest amount of filler.
He is fixing cars with a single pull frame machine that is sub $ 5,000 on the USA used market. Also look at some of the measuring tools he made.
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Dimpled metal is done quite regularly to make up for expanded metal, and in oldschool times it was leaded afterwards to make a solid surface to build up on.
I like these tradesmen, they work with the bare minimum of tools and use their skill to make the low cost tools work for them.