The other week I did a quick spray job on my spare alloy which, even though it was a quick job, went on quite well. Anyway, I decided to do my kidney grills and this is where the problem started. The undercoat went on well but when I sprayed the black gloss it went all bubbly. Not big bubbles but more like an Aero. I put a few coats on to see if would sort itself out but it didn't. I used a different paint to the one that I sprayed my alloy with but price wise was fairly similar. I only used that one because there wasn't any left at the first shop. The only thing I can think of is that it was a pretty hot day the day I sprayed the kidney grills. Could this have been the cause of the Aero like bubbles?
Secondly, what's the best way to strip them back down to start again?
I've attached a couple of photos to show you the results.