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Old 07-15-2012, 01:11 PM
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Fresh paint, fixing mistakes

I am starting to paint some body panels on my project, and this is more for the experience gained, than it is to make the perfect paint job, a long way from a show car. Maybe a daily driver, maybe a farm truck, do not know yet.

The paint is a 2K Acrylic Urethane, a "fast drying acrylic urethane designed for today's automotive collision centers" It is just a off white, solid, non metallic. It should be fairly forgiving.

So this is an ideal project to get some "trigger time". As some point you need to stop reading about how to paint, and just start painting. That is where I am.

Of course, there are some mistakes and flaws in the paint, some dirt, some water spots.

How long to wait before buffing, or possibly sanding, to clean up imperfections? I understand I could easily sand or buff through the paint, but that is just another opportunity for more "trigger time"

The data sheet says 16 hours to polish, and put into service.

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Old 07-15-2012, 02:40 PM
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I'd give it at least 24 hours. Those times given are under the assumption you are spraying in 74 degree temps so if it's cooler you'll have to wait longer. Seems like most clears now are engineered to be cut really quickly.

You have a forgiving color so it shouldn't be too hard of a buff. Stay away from 800-1000 if you're not used to buffing and don't put a scratch where your buffer can't reach.
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Old 07-15-2012, 03:50 PM
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Thanks for the advise. I have other stuff to do today, so it will be at least 24 hours.
I am thinking the longer I wait, the harder the paint will be. I am also thinking that if I have to repaint some spots, the sooner I get another coat of paint on, the better adhesion with the paint already on there.
I have used some of Meguire's cleaners, (heavy cut, medium cut, light cut) before, but mainly on gelcoat on boats. Gelcoat is really forgiving, the average thickness of gelcoat is .030 to .040. but I understand paint is about a tenth of that.

This is not a base coat, clear coat paint. Just a single stage, hardened Acrylic urethane.
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Old 07-17-2012, 11:13 AM
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A quick update.
This thread was about a hood I painted the top of. Yesterday, I sanded it with some used 400 wet on a block, and then followed with some Meguire's medium cut cleaner, used on wool pad, and then some Meguire's Swirl remover.
The areas I did are a long way from perfect, but pretty good. I did not go through the paint, and I may be able to get away from having to repaint the hood, considering the project.
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