Paint basics.

Well I guess I dropped the ball as far as the Etch primer. I used it in the engine bay when I stripped the paint down to bare metal. I etch primed all the metal then did body filler over it, then primed with epoxy.

I guess my question is if can't use etch primer on top or underneath body filler then when can you use it?

Great info Adam. I saved in on my computer for future reference.