Before I get rolling, I want to clear up one thing: Bondo is a brand name, though it's commonly used as a general description referring to any and/or all body fillers-kinda like Kleenex is to tissues.

Bondo is a brand of body filler, but it's also the generic term for plastic filler that, when uttered, makes many car guys cringe. Anyone restoring an old car knows what it's like to start working on ...