Color Sanding ??????

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Old Mar 31, 2006 | 05:01 PM
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Color Sanding ??????

hey guys i was wondering if i buy a black car and color sand it to get some of the orange peel out how do you think it would look ????
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Old Mar 31, 2006 | 05:16 PM
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like the primer beneath. acura paint isnt known for being overly thick.....not to mention color sanding is something ususally done before they clearcoat is applied isnt it?
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Old Mar 31, 2006 | 05:17 PM
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maybe your right i forgot about the clear coat haha
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Old Mar 31, 2006 | 06:53 PM
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Most the time the orange peel is in the clear anyway ... BUT .. unless your trained .. its risky ... it doesn't take much to go through the clear and once you do its reclear the panel .

If you use a PC and patience you can get rid of a lot of the orange peel .. I did it on my VW and the paint there is extreemly hard .. but it was hours and the results were astounding.



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Old Mar 31, 2006 | 07:04 PM
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Originally Posted by Jesstzn
If you use a PC and patience you can get rid of a lot of the orange peel
So the DQOTD is, what is a PC?
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Old Mar 31, 2006 | 07:22 PM
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porter-cable buffer

www.porter-cable.com
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Old Mar 31, 2006 | 08:16 PM
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http://www.coastaltool.com/cgi-bin/SoftCart.exe/a/port/pr7424.htm?L+coastest+bqzg3890ffd18ed1+1143924563


Prolly the best price out there for the PC and backing plate .
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Old Apr 1, 2006 | 08:29 AM
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From: Ft. Lauderdale


Have one and love it. With a NBP (black) TL, it's almost required. It makes short work of swirl marks if and when they appear.
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Old Apr 1, 2006 | 01:34 PM
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Originally Posted by Xpditor


Have one and love it. With a NBP (black) TL, it's almost required. It makes short work of swirl marks if and when they appear.
did yours take out any orange peel ?
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Old Apr 1, 2006 | 02:51 PM
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From: Ft. Lauderdale
Red face Florida Orange Peel

Originally Posted by tad4774
did yours take out any orange peel ?
No. Not that I can tell. I have only used it therapeutically- i.e. to remove problems. I haven't used it on the whole car because it is still pretty new. I have a clear bra on the front and I removed swirl marks on it and on the hood.



I believe what orange peel I have is in the color coat. If there is orange peel in the clear coat, I'm sure that will improve with multiple waxings/sealings as the peaks wear in.

My belief is that orange peel is caused by too much air pressure in the paint guns. Or, recoating while the first coat is stll too wet. These are things that manufacturers can and should fix. But, I have seen terrible orange peeling on BMWs and M-Bs. It may be compounded (pun not intended) by the new water borne paints used for environmental reasons.

M-B is supposed to have a new ceramic paint process starting with mid 2005 models. I wonder how that is working out?
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Old Apr 1, 2006 | 08:54 PM
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In my experience visible orange peel is always in the clearcoat and is present in most urethane finishes to some extent. Generally it is worse when atomization pressure is too low, when insufficient reducing solvent is used, or when the reducing solvent evaporates too quickly, due to a variety of reasons. These conditions can all be controlled to a great extent in the factory, but to a lesser extent in bodyshops.

Urethane paints (the common automotive finish these days) are prone to have orange peel, even when all painting variables are optimized, and for this reason most high end paint jobs are color sanded and compounded to compensate. Sanding flattens the peel, but dulls the finish. Compounding brings the shine back after sanding. In theory this process could be used on factory paint, but most paint detailers shy away from this since factory clearcoat is typically very thin and it is too easy to cut through the clear. If the clearcoat is broken through, it must be repaired with base and clear. Refinishers often add an extra coat of clear if color sanding is planned, for insurance against sand-thrus.

Compounding with a polisher/buffer removes a bit of clearcoat each time it is used. It will not remove orange peel effectively, since the polishing pad works on the lows as well as the highs. It is extremely easy to cut through the clearcoat even when using a mildly agressive compound, especially on edges and peaks. Some people use masking tape to protect these vulnerable areas while compounding. Buffer speed is critical too.

My '05 TL has a moderate amount of orange peel, as does every other one I've looked at. Not bad compared to many other cars. The RLs I've seen are really flat, but I was told they color sand at the factory. My advice is to leave well enough alone......the TL looks pretty good even with a bit of orange peel and it is not worth the risk to try to make it better.
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Old Apr 2, 2006 | 07:58 PM
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Originally Posted by MichaelBenz
like the primer beneath. acura paint isnt known for being overly thick.....not to mention color sanding is something ususally done before they clearcoat is applied isnt it?
No typically orange peal is in the clear and is typically caused by atomization pressure that is too low. There are alot of other reasons it happens too. Color sanding isnt somethng i would recomend doing to a factory finish unless you are really sure what your doing. Its very very easy to cut thru the clear if you dont know what you are doing . If you have orange peal thats worse than normal then you may want to look into using a ultra fine 2000-3000 grit to knock it down so its not as bad, then buff and polish.
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