I am about to start working on my engine deck lid and a fender. They both have a moderate amount of bondo on them. I believe once I remove the existing bondo I can smooth out the metal and use considerably less bondo. My questions are:
What is the best way to remove Bondo? Heat (Propane Torch), Sanding it out, Chemical (Aircraft) or Sand Blast?
Then once the bondo is removed, and before working the metal, should the bare metal be protected, such as etch primer?
Thanks.