RCM only

On Mon, 31 Aug 2009 21:58:24 -0700, the infamous DaveC
scrawled the following:

The goal: to change the color of a few new, factory-painted steel parts. I
lightly sanded all surfaces with 800g emery paper. Cleaned up with denatured
alcohol. Sun dried.

First coat of spray enamel went on and dried to a fine gloss finish. Dried
overnight inside and put outside again in the sun while I was at work for a
thorough drying.

Came home, lightly sanded again, cleaned with d.a., dried, and sprayed a
second coat.

Almost immediately (less than 10 seconds) the coat took on a curdled look.
Sort of wrinkled. Not "orange peel", but it looks like the cracks in a dried
lakebed. This effect was apparent on all parts I sprayed with a 2nd coat, not
just one.

What did I do wrong?

Obviously I'll have to dry it, sand down to the original finish and do it all
again.

What should I do differently?

Paint is Rustoleum "industrial strength" enamel.

I wouldn't sun-dry anything metal and I wouldn't use the alcohol
between coats. I think the alcohol was your most likely culprit
unless you sprayed HOT parts, right from the sun.

--
Good intentions will always be pleaded for every assumption of authority.
It is hardly too strong to say that the Constitution was made to guard
the people against the dangers of good intentions. There are men in all
ages who mean to govern well, but they mean to govern. They promise to
be good masters, but they mean to be masters. --Daniel Webster