The Stovebolt Site Forums The Shop Area Paint and Body Shop One day everything is perfect. Next day same thing and it all goes to hell

Thought I had the right stuff after successfully painting my bed. Single stage omni, two coats, then blended omni clear 50/50 with paint for last coat.

I have three spots like this. 18 inches by 30 inches. Looks as though it is sun faded. Definitely a top coat issue. Hood was done with same cup of paint.

Just a thought. What was the temp when you shot that last coat.

Kind of looks like you didn't get a good mix between the clear and the color, so you have dark spots where the color is more concentrated.

Temp was consistent through whole spray. I had heat at 72.

I was thinking mixing issue as well, but why localized areas approximately same size and in the middle of a cup of paint?

What is under the paint? what I mean is -what is the surface prep and primer? I would follow the manufactures recoat instructions and shoot it again.

That epoxy I sanded smooth. We did some test shots and found the paint adhered well without sealer. The areas are so localized. Tired of paint not working.

Heat, air flow on the painted surface, humidity, condensation, heat from lighting, many variables can affect the final appearance. I very much doubt it was a mixing issue. The number one suspect is incorrect surface prep and contamination under the topcoat.

Was that the catalyzed or non-catalyzed Omni paint? And was the blue and clear the same...that is to say were both catalyzed or non-catalyzed? Were both fresh paint? Did you stir very (by that I mean extremely) well and keep moving the gun as you sprayed?

I've had decent luck (not perfect) combining clear with the color for the final coat. I've also had issues with the two trying to separate on me. 30 years ago when you had paint like Deltron it worked a charm. Today...you won't have the same sort of results.

Yes both catalyzed, both omni. Mixed both separately and then together same as the bed which came out great. Not fixing in the short term. I want it driving.

Sorry to hear of the problems. Normally I'll mix both paint and clear... ratio of 8 parts paint/clear mixture and then add 1 part of thinner and 1 part of hardener and mix that all very well. Good luck when you get back to it.