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filling holes

  1. welding patches vs fiberglass

    Body - Exterior
    I’m restoring a ’73 SD455 Trans Am and filling a hole in the roof. Pros recommend welding a patch in the hole (it is about 1” in diameter) before filling it. A local auto paint store is suggesting a 3M product to patch the hole. I have welders and I can weld it but I’m concerned about warping...
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