Quote:
Originally Posted by das_auto
Then one wet coat
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There's your problem.
Don't spray this stuff in heavy wet coats- and ABSOLUTELY NEVER spray it on wet on the first application.
1K lacquer clears have a significant amount of solvent in them, and so they must be slowly and carefully applied. The first layers must be sprayed in light mist coats, to build up a protective barrier to shield the paint below. Then medium mistcoats can be built up on top. But if you ever spray it wet, you are asking for trouble. You've then poured a pool of lacquer thinner on the paint below. Your paint here reacted exactly as you would expect to that- it softened and wrinkled. (Often these effects are more difficult to see on solid colors- it tends to be even more spectacular when clearcoat is applied too heavily over metallic paints and decals.)
Build up the clearcoat in mist coats, and never allow it to collect in a wet pool on the surface. The first three applications should be very light, to build up a barrier layer- wait at least an hour between applications. After a barrier layer is down, medium mist coats can be applied two at a time, leaving at least 1-2 hours between applications. Clearcoating should take all day if you're fast and everything is going perfectly- but all weekend (or even all week) is safer.