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Paint and Body Maintenance & Repair

1025 messages,  Last post on Nov 12, 2009 at 10:06 AM

You are in the Maintenance & Repair Forum. Your Host is mr_shiftright

What is this discussion about? Auto Body, Paint, Coupe, Convertible, Hatchback, Truck, Sedan, Wagon, SUV, Van


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#1014 of 1025
Re: Clearcoat Failure [oldfarmer50] by Mr_Shiftright HOST
Sep 12, 2009 (3:14 pm)
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Replying to: oldfarmer50 (Sep 12, 2009 3:05 pm)

Lots of things---UV damage, pollution damage, just negligence from not washing the car often enough in a high pollutant area---or using the car's hood as a shelf, etc.
#1015 of 1025
Re: Clearcoat Failure [Mr_Shiftright] by oldfarmer50
Sep 12, 2009 (7:25 pm)
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Replying to: Mr_Shiftright (Sep 12, 2009 3:14 pm)

"...UV damage, pollution damage...not washing the car often enough..."
 
So it sounds like the best protection would be a good old wash and wax.
 
It seems black cars show this kind of damage more often. Red would be second. Any opinion on that?
#1016 of 1025
Re: Clearcoat Failure [oldfarmer50] by Mr_Shiftright HOST
Sep 12, 2009 (9:06 pm)
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Replying to: oldfarmer50 (Sep 12, 2009 7:25 pm)

Color shouldn't matter, since the clear coat completely covers the color coat. When you buff a clear coated car, you don't get any color on the rag (hopefully not anyway).
 
This is why I'm really against any heavy buffing of a clear coat car---once you break the clear coat barrier, you can't just repair the top coat---you have to do both clear coat and color coat together.
#1017 of 1025
Re: Clearcoat Failure [oldfarmer50] by jipster
Sep 15, 2009 (6:37 pm)
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Replying to: oldfarmer50 (Sep 12, 2009 3:05 pm)

What's the main cause of this? More importantly, what can be done to protect paint from the clearcoat breaking down?
 
I would think an improper repaint and clearcoat application. I had some clearcoat failure on used Nissan Altima I had. I bought a small bottle of clearcoat, scraped off the clearcoat that was loose, and used the liquid clearcoat to seal along the border that was breaking down. Seemed to work fairly well.
#1018 of 1025
Re: Clearcoat Failure [jipster] by oldfarmer50
Sep 16, 2009 (9:28 am)
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Replying to: jipster (Sep 15, 2009 6:37 pm)

"...I had some clearcoat failure..."
 
I probably haven't noticed cars that have small areas of failure. What I've seen are cars that have large areas (several square feet) where the clearcoat seems to be sloughing off either in one spot or several spots on one panel (like the hood).
 
Makes an otherwise attractive car look bad.
 
I figured that sunlight was the main culprit but I was wondering if there was anything special I could do to ward off premature failure. Maybe I'll wrap my cars in plastic like they used to do with living room furniture.
#1019 of 1025
Re: Clearcoat Failure [oldfarmer50] by obyone
Sep 16, 2009 (1:09 pm)
Reply

Replying to: oldfarmer50 (Sep 16, 2009 9:28 am)

I figured that sunlight was the main culprit but I was wondering if there was anything special I could do to ward off premature failure.
 
Parking it in the garage usually works too.
 
I thought you were describing catastrophic failure of the clearcoat. When reading Jipster's reply was beginning to question my reading ability. Glad it wasn't me.
#1020 of 1025
Re: Clearcoat Failure [obyone] by jipster
Sep 22, 2009 (5:25 pm)
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Replying to: obyone (Sep 16, 2009 1:09 pm)

When reading Jipster's reply was beginning to question my reading ability. Glad it wasn't me.
 
Maybe it's your poor grammar you should be questioning?
#1021 of 1025
No luck with touch-up paint by easypar
Nov 06, 2009 (1:40 pm)
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I've never had such rotten luck as with my '03 Nissan Maxima. I've got 5 or six decent size rubs in the rear bumper, two on the passenger door and 3 bad spots on the front clip. I did good prep, got them cleaned up with 1500 and 2000 grit. But I absolutely could not get either paint on without horrible looking brush marks. I tried both the Nissan 1/2 oz bottle and a 2 oz bottle mixed for me by a local shop.
 
I tried both the brushes that came in the lids and a very fine brush (stolen) from my wife (artist type) supply, no luck with either one. Really hacked me off because I was doing my car and her Lexus at the same time and her car looks great.
 
I broke down today and ordered a 12oz aerosol can online from one of the touch up suppliers but thought I'd better check in here in case there's something I'm missing.
 
The color is "Titanium", Nissan code WV2, kind of a dark grey (ish) metallic. I've done touch up on 3 other "silver" toned cars, Chevy, BMW and Lincoln and had much better results than this.
 
Any advice?
 
Thanks in advance.
 
easypar
#1022 of 1025
Re: No luck with touch-up paint [easypar] by obyone
Nov 07, 2009 (12:16 am)
Reply

Replying to: easypar (Nov 06, 2009 1:40 pm)

Don't forget to order some clearcoat to spray over the touchup paint.
#1023 of 1025
Re: No luck with touch-up paint [easypar] by Mr_Shiftright HOST
Nov 07, 2009 (8:59 am)
Reply

Replying to: easypar (Nov 06, 2009 1:40 pm)

There's also a chemical called a "leveller" that you might be able to apply after you brush. A lot depends on the color you are working with as well. And over-brushing can be a no-no. It requires a lot of patience. Mine came out looking bad, too, so you are not alone.

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