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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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sww914
post Aug 19 2007, 10:55 PM
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You need to be sure of several things;
1. You cleaned the surface well with wax, grease, and silicone remover. You wipe it on wet with a rag, and wipe it off while it's still wet with a dry rag. Use those blue "Shop Towels" paper towels. On a targa top, do it twice. The paint on them is a little porous and every DAPO probably put Armor All on it.
2. You're not spraying any WD-40, Armor All, Pam, or anything else that atomizes oil or silicone anywhere near the car, especially after the stuff is sanded, and neither is anyone else.
3. Make certain the crap isn't coming out of your air lines, as mentioned above.

The problem is always oil, wax, grease, or silicone. Usually silicone.
You can bury fisheyes. If you keep putting wet paint on top of them, they will continue to form. You can spray 3-4-5 dry coats over them, let the paint tack up, (about 30 mins) and then continue with wet coats. If they come back, your coats weren't dry enough, you put too few on, or you didn't wait long enough, either between dry coats or before adding more wet coats.
You can use fisheye additive and it will help. Use what's recommended for your paint. Urethanes are picky about what you use, with old paints you could just use Smoothie in everything, but not anymore.
I paint something just about every week, but I don't have any fisheye remover and I haven't had any for a couple of years. I don't usually get any fisheyes because my air is clean and I get the parts clean (chemically as well as physically) before I paint them.

Once, a long time ago, I was painting something in the garage and I got the most horrendous fisheyes between my first & second coats of clear. I couldn't figure out why in the world I'd get them after the sealer, 5 coats of base and one coat of clear were all fine. I found out later that my wife had sprayed
WD-40 on something- inside the house with the windows and doors closed at about that time.
I couldn't believe that the stuff managed to mess up my paint under those conditions, but it did.
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