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Old 10-30-2009, 02:39 PM
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Wet sanding buffing?

Hello I will be spraying centari acrylic enamel pitch black 99a this week and the few times in the past I have sprayed this I always get an orange peel effect so I was planning on wet sanding and buffing out the paint.

-But I need to know how many coats of enamel to spray if you will be wet sanding some of it off?


-Do you spray more than normal?


-Also how many coats should one spray of this enamel? In the past I just did at least 3-4 coats.


THanks guys!!

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Old 10-30-2009, 02:52 PM
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OOF! Centari!!! Can ya still drag that stuff up?...
Anyway, I've sprayed that stuff. Its been a long time ago. But, I recall having some orange-peel issues myself. With what I've learned since then, I'd try to slow the kick down a bit with a slower reducer or harener. But, I'd say, Get it as slick as you can with 4-5 coats, if you're used to spraying 3-4. That'll give ya an extra coat to sand off during color-sanding. Also, I think I remember Centari (like most any enamel) being a bit of a challenge to buff. So be prepared for that. I may remember wrong... Maybe someone with some more recent experience with it will ring in and let us know.
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Old 10-30-2009, 04:37 PM
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You are much better off using a 1 stage acrylic urethane paint if you intend to sand and polish it.

But if you must sand and polish the Centari, just paint it as you normally would. Centari acrylic enamel is a "3 coat" system. Wet sand it the next day with 1500 and polish it.

Do not attempt to sand and polish it if you don't use hardner in the paint.

If you are getting a lot of orange peel, step up closer to the plate and shorten up on the bat. And/Or add some (a small amount) retarder to slow the paint down on the last two coats to increase flowout.

http://www.farecla.com/

Last edited by F-BIRD'88; 10-30-2009 at 04:48 PM.
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Old 10-30-2009, 04:48 PM
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Thanks for posting, as far as wet sanding and polishing does one need to wait a certain period of time before doing this? What happens if you wait longer than the day after say a week or a few months?

THanks...
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Old 10-30-2009, 04:58 PM
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Quote:
Originally Posted by brandonA.
Thanks for posting, as far as wet sanding and polishing does one need to wait a certain period of time before doing this? What happens if you wait longer than the day after say a week or a few months?

THanks...
Acrylic enamel and acrylic urethane paints tend to have what I call a period when they are "open". Usually 1 to 3 days after painting. (air dry). During this period the paint is still curing and giving up solvent and sands and polishes very easily. After than the paint is harder. It still can be polished but, takes more effort and pressure.

For best results when sanding and polishing the Centarri be sure to use the best quality Dupont hardener in the paint.
This premimum overall/complete refinishing hardener has urethane additives to maximize the quality of the finish.
its much better than someof the cheap aftermarket/generic economy/repair acrylic enamel hardeners.

After wet sanding with 1500, use the Farecla G-3 with a foam pad
(either 3M waffle pad or the Farecla G-Mop pad and water.) Follow up with the G-10 fine finishing polish.

Farecla is a water based polishing system. Do not use the old pad that was previously used with a oil based lacquer type buffing compound on it. In other words, use a new pad.

Last edited by F-BIRD'88; 10-30-2009 at 05:14 PM.
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Old 10-30-2009, 05:00 PM
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Thanks for the info. I do have the dupont hardener so I should be good there...
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