What caused this?

Coyote Jack said

The primer and base/clear were all from the same manufacturer and meant to be used together. There was no force drying at any time. This is cheap paint but I have no problems with the other vehicles I have painted with it.

Number 3 could be a problem. I did spray the clear fairly thick and I was in a hurry and may not have waited long enough between coats. I was waiting 10 to 15 minutes. I probably should have waited longer.

Jack

Click to expand...

Jack,



Not letting the solvent evaporate in the underlying layers will cause this problem. The top layer skins over and traps the solvents. And eventually the trapped solvents weaken the under layers, adhesion fails and viola you have big nasty blisters. If the ambient temperature is a little higher than acceptable the clear will skin over that much quicker.

As may have already figured out stripping the finish and starting over is your only recourse.

I hope I was able to help you in some way.

Good luck with your future refinish efforts.

sscuda.