Undercoating Removal Advice

I'm ready for the next big step in getting my 1970 Challenger back on the road. I will be welding rear subframe caps because of frame rot and welding frame connectors from US Car Tool that are cut to fit the underbody profile. This will require the removal of both factory undercoating and some rattle can rubberized that I sprayed on in 1982. The metal, of course, must be as clean as possible for welding.

Initially, I thought some paint stripper would work. However, most YouTube videos I've...

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Author: Weldguy