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Spray on gel coat

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Old Dec 20, 2006 | 09:44 AM
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Default Spray on gel coat

I am trying to restore a 73 Corvette out in the middle of Africa, as we live in a desert the heat hasn't been to kind to the Fibreglass. Saw on overhaulin a spray gel to seal the body before painting, I can't get it out here...can anyone tell me what is available in the States. Is there such a thing as a spray-on-gel coat?
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Old Dec 20, 2006 | 10:15 AM
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C3's never had a gel coat and to be honest that is "old technology"

Get yourself a good epoxy primer, it will seal the old fiberglass and any repairs, doesnt shrink and will make a good base for the rest of your paint job once hardened.

Nick
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Old Dec 20, 2006 | 12:01 PM
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Originally Posted by lvrpool32
C3's never had a gel coat and to be honest that is "old technology"

Get yourself a good epoxy primer, it will seal the old fiberglass and any repairs, doesnt shrink and will make a good base for the rest of your paint job once hardened.

Nick

Who makes a good epoxy primer?
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Old Dec 20, 2006 | 01:03 PM
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I went over the entire body on my '68 back in 1983, removed any bondo and fixed everything with glass. When I was finished I sprayed the whole thing with Gel Coat to seal everything up. It may be old technology, but Eklers still sells it. It does not replace primer, just neatly finishes off the fiberglass. It orange peals baddly, and needs to be sanded smooth, lightly spray it with black laquer and block sand it untill the paint is gone. Next time I will do the same thing.
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Old Dec 20, 2006 | 01:44 PM
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Originally Posted by Durango_boy
Who makes a good epoxy primer?
PPG DPLF, and SPI (Southern Pollyeurathe Inc) make excellent epoxy primer/sealers. I chose the SPI stuff based on better sandability and better price, equal to PPG DPLF in quality if not better.

The stuff will seal and encapsulate your body preventing a host of future problems. If you are going to do a body off resto, then I would recommend shooting both sides inside and out with the epoxy sealer to truely encapsulate the body.

As for material usage I used 2 quarts of epoxy with 2 quarts of hardener, this gave me 2 wet coats of the exterior body and door jams, I would suggest double the quantity if you will be doing the body shell complete for 2-3 coats. Can be sprayed with 1.4 mm fluid tip and lays 1.5 mils per coat.

Great stuff and any body work or future paint coats will stick to it like nobody's business.

Good luck
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Old Dec 20, 2006 | 02:21 PM
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Awesome man. Thanks so much.
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Old Dec 20, 2006 | 08:29 PM
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Originally Posted by Durango_boy
Who makes a good epoxy primer?
I use Dupont,when I get to the shop in the next day 2 I will look for the part #
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Old Dec 20, 2006 | 09:47 PM
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Originally Posted by l88rocket
I use Dupont,when I get to the shop in the next day 2 I will look for the part #

I'm glad they make one...I like Dupont and use their NASON stuff for all my paint jobs. I may already use their primer, but I can't recall if it's an epoxy. I don't think it is.
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Old Dec 31, 2006 | 08:44 AM
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Originally Posted by Durango_boy
I'm glad they make one...I like Dupont and use their NASON stuff for all my paint jobs. I may already use their primer, but I can't recall if it's an epoxy. I don't think it is.
What is this NASON stuff you use? Do you spray it straight onto the fibreglass as a sealer coat or undercoat? Have you got a the correct name for other than "stuff"?
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Old Dec 31, 2006 | 10:27 AM
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Originally Posted by Phuduhudu
What is this NASON stuff you use? Do you spray it straight onto the fibreglass as a sealer coat or undercoat? Have you got a the correct name for other than "stuff"?

NASON is just a brand that Dupont makes. You can get all it's products apparently. Sealer, primer, base coat, and clear coat. Stop by a paint booth or an Oreilly that has a paint department and they'll walk you through everything. NASON is just great stuff...very high quality.
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Old Dec 31, 2006 | 12:22 PM
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I don't know if they will ship overseas, but http://www.angelfire.com/biz/fapco/ this place is local to me here in Missouri and they are probably one of the most knowledgable paint stores when it comes to Dupont painting systems like NASON (middle of the road product) or ChromaBase (Almost top of the line product).
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Old Dec 31, 2006 | 12:28 PM
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Originally Posted by 442olds
I don't know if they will ship overseas, but http://www.angelfire.com/biz/fapco/ this place is local to me here in Missouri and they are probably one of the most knowledgable paint stores when it comes to Dupont painting systems like NASON (middle of the road product) or ChromaBase (Almost top of the line product).

Good call. The Toyota I painted was all Chroma and I was very impressed. Good suggestion.
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Old Dec 31, 2006 | 09:44 PM
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I believe it's Dupont DP90. Harder than all get out to sand. So make sure you have the rough stuff done.

Jim
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Old Jan 1, 2007 | 12:29 AM
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I'm looking into the paint info, too. The local DuPont shop informed me that if you're shooting single stage (no clearcoat) metallic, NASON is the preferred (DuPont) brand by most shops; base/clear, go Chroma.
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Old Jan 1, 2007 | 10:58 AM
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Originally Posted by gkz
I'm looking into the paint info, too. The local DuPont shop informed me that if you're shooting single stage (no clearcoat) metallic, NASON is the preferred (DuPont) brand by most shops; base/clear, go Chroma.

Just a tip...stay away from single stage paints. I just don't think you get the finish you want. It's designed for cheap paint jobs, and what you get, IS, a cheap paint job. Just my opinion.
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Old Jan 2, 2007 | 06:26 PM
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Originally Posted by jbs75
I believe it's Dupont DP90. Harder than all get out to sand. So make sure you have the rough stuff done.

Jim
Same thing with the PPG DPLF, a bear to sand, I think the issue is in the mix ratio, I believe the PPG and Dupont are 1:2 epoxy to hardener, whereas the SPI epoxy has a 1:1 mix ratio and is considerably easier to sand, you can also thin the SPI 15-20% to help it lay really flat.

Personally, unless your body is absolutely mint prior to the epoxy coat, I would use the epoxy as a sealer and then top with a traditional 2k primer to fill in the inperfections, all of the epoxy primers will shrink considerably when hardening so the slightest blemish will show, easier to deal with a 2K filler coat than trying to sand the epoxy super smooth. Just my $0.02

Last edited by 75coupered; Jan 3, 2007 at 10:22 AM.
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Old Jan 3, 2007 | 08:02 AM
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Thanks to all you guys out there in the forum. Your information is priceless, will be looking into product available locally and see if there is a spec match. Will keep you all posted on findings.

Phuduhudu
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Old Jan 3, 2007 | 07:05 PM
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If you have the time...it's always a good idea to let a stage sit for a week or so before applying the next stage. For instance...seal it. Week. Prime it. Week. Base coat it. Week. Clear. Week. Then, wet sand and buff. Turns out VERY nice.
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