For screws I just usually snap them off by trying to tighten them instead of loosen, then once I take the panel off and can get to the back I use vise grips to get them through the holes.

For bolts I like to apply penetrating oil and use impact. Heat and sheetmetal don't mix.


Paint & Body Shop moderator
A lone amateur built the Ark. A large group of professionals built the Titanic.