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Old 09-01-2008, 01:03 PM
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Paint Questions

I'm getting ready to paint my frame, engine, transmission, suspension all a gloss black with Dupont Centari Acrylic Enamel. I am sandblasting everything down to the bare metal, and the engine block has been dipped.

I have some Proform self-etching primer as well as some Dominion Sure Seal Urethane primer that I was hoping will be compatible with the Dupont paint. Any problems with this?

Also just to be sure after sandblasting I spray the etch, then the sealer, then the high fill primer, then paint? Do I have to sand during any of these steps?

Any tips would be appreciated,
Sean
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Old 09-02-2008, 12:17 AM
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If the frame has been sandblasted, there is no need for the etch primer.

Etch Primer etches the surface of smooth metal so that paint will adhere.

Sandblasted metal is already etched by the sand.

Save yourself some time and money by just applying a couple coats of Epoxy followed by your top coat.

Frank
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Old 09-02-2008, 12:38 AM
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The more I read the more I wish I had gone with epoxy. I figured the guy at the autobody supply store would know what to use for the conditions around here and he gave me what I have in the first post. I don't want to go out and buy more so I was hoping this would be okay.

Sean
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Old 09-02-2008, 01:25 AM
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I have learned that the guys (girls) at the paint supply store are there to sell paint. Whether you need it or not.

And..... more times than not, they have no idea how most of the products that the sale work.

You should be ok to just leave off the etch and apply the Sure Seal to the bare metal.

Here's a hint: You are going to need to seal your work before you apply your top coats. If you get some Epoxy Primer, you can reduce it and it makes a perfect SEALER.

So you can always use some Epoxy Primer around the shop.

Frank
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Old 09-02-2008, 04:10 PM
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When you sand blast all the protective dirt, paint, oil and crap off your frame, sure it is etched. But, what is stopping the humidity in the air from starting rust as soon as you are finished blasting. Etching primer contains phosphoric acid with converts any surface rust to a harmless inert stuff. I'd go ahead and use the etching primer, and the other primers you have. There is nothing wrong with what you plan on doing. Different parts of the Continent quite often require some different techniques.
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Old 09-02-2008, 09:48 PM
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If you use the etching primer, you will have to use a sealer over it. The acid can cause havoc with some paints.

Frank
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