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> Paint question, Paint gurus please HELP!
VaccaRabite
post Aug 19 2007, 09:49 PM
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Okay.

So today I repainted my trunk panels. When I painted them the first time I got these little voids. I thought that they were solvent pops at first.

Now I am not so sure, cause I got them again when I re-painted.

Symptom:
Small crater in the paint, the largest being 1/32' in diameter, most of them are smaller. They are nearly perfect circles. No paint seems to want to exist there.

When I got them the first time, these were the corrective actions that I took:
1) I sanded out all the imperfections - wet sand, back down to primer with 400 grit paper.
2) re-shot sandable primer (primer seemed to adhere fine)
3) sanded primer with 400 grit paper till baby butt smooth.
4) cleaned with Eastwood Pre (wax and grease remover)
5) gently wiped down with a fresh tack cloth.

The really tiny ones were filled in with a heavy coat of paint, but there is still a tiny, but visible, depression in the paint.

Whatever it is, it seems like it repels the paint. Most of them seem to be on the targa top, but I have a few of them in the front hood and one on one of the headlamp covers.

I'm stumped. What the heck am I dealing with here? Where ever one of these little voids is, you can see clear down to the primer. My best guess is overspray of some sort of oil or lubricant or something, but I did not spray anything but paint since I sanded and cleaned the panels. I'd like to get them fixed.

Zach
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John
post Aug 19 2007, 10:44 PM
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From your description, it sounds like these blemishes are in the exact same spots that they were before?

The primer flows out and sits flat in these locations?

What is under the paint in these locations? Is there filler or is it steel like the rest of the panel?

I read somewhere that some tack cloths may actually contribute to some paint blemishes (fish-eyes included).

These don't really seem to me to sound exactly like fish-eyes. I understand fish-eyes to be depressions in the paint, but not necessarily associated with "holes" in the finish all the way down to the primer. Got any pictures?

To me it does sound like some sort of contamination, but for the same thing to happen at the same spot twice after prep makes me think a potential problem with the substrate (static charge, magnetism, ?????).

Pics may help.
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