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Paint and Body Experts! I have a question!

Old 9/28/15, 06:35 AM
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Paint and Body Experts! I have a question!

I purchased a used 3D Carbon GT500 spoiler from a guy off eBay who took it off his car after about 3 months. He ordered it unpainted, and had a local shop paint it for him. They did a horrible job and he took it off the car because the paint was bubbling and peeling.

So how to I strip the paint off of this thing to get it prepped to be repainted? I'm trying to keep costs down (thus purchasing a used spoiler) so anything I can do to prep the spoiler for a body shop to paint it for me would be good. If need be though, I'll spend the money to get it stripped right if it's beyond my capabilities.
What could have caused the paint to
fail in the first place? The previous owner mentioned that it started failing after he washed the car. Could that have had anything to do with it? (Too soon? Bad paint? Bad prep?)

And lastly, the spoiler feels like a large hollow cavity. Would there be anything gained by maybe filling it with expandable foam to help it have a little more structure to the inside of it?

Thanks for any info you might be able to provide!
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Old 9/28/15, 11:52 AM
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Sounds like the paint was not compatible with the resins in the carbon material, or it wasn't prepped and primed properly. A paint stripper might eat away at the resins that the spoiler is made from, if you are planning on using a chemical stripper, trial a small patch on the underside where it doesn't show, if you want to go that route. You may be better off sanding it with a DA sander down to the base material, then use a good urethane primer. Paint it with a single stage urethane paint and you should be OK.

Last edited by GT_Dave; 9/28/15 at 11:57 AM.
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Old 9/28/15, 05:20 PM
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Originally Posted by GT_Dave View Post
Sounds like the paint was not compatible with the resins in the carbon material, or it wasn't prepped and primed properly. A paint stripper might eat away at the resins that the spoiler is made from, if you are planning on using a chemical stripper, trial a small patch on the underside where it doesn't show, if you want to go that route. You may be better off sanding it with a DA sander down to the base material, then use a good urethane primer. Paint it with a single stage urethane paint and you should be OK.

Thanks for the advice!
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