Originally Posted by MARTINSR
Sanding too smooth before painting isn't going to cause it, not realistically. Sure if you sanded it with 3000 or something maybe. But up to 800 should n't be a problem. Something else went on there, a contamination, painted with too fast a reducer so it flashes off leaving the paint just sitting on top, something like that.
I didn't really think that was the problem.
This was all PPG stuff, the urethane, hardener, reducer, all sold to me by the jobber.
I won't use their paint again.
The truck was painted 6 years ago and gets chips easily.
I pulled paint off two or three places unmasking the repair.
I can never sell this truck w/o telling prospective buyers that it needs stripped and I cannot paint it again w/o stripping all the top coat off.
Maybe I'll just drive it til it drops.