I'm going to fill some holes and do some other cleanup/patch work on the sheet metal of my '57. I have a Promig 140, but I've been led to believe that MIG welders generate too much heat, and for sheet metal repair TIG is the only way to go.

Does anybody have an opinon? (About MIG v. TIG welders, that is.)

[b]1957 Chevy Big Window 3100[.b]

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It ain't broke 'til you can't fix it any more.