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Old 05-04-2006, 06:02 PM
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can you just shoot primer then paint?

Hi all,
I was wondering if right after the primer is dry if you could shoot the top coat? In other words without blocking the primer. I am not looking for a perfect paint job and just need to geterdone.
Walt

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Old 05-04-2006, 06:27 PM
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yup you can if you want to.
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Old 05-04-2006, 07:20 PM
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you can, but depending on the type of primer dont expect the paint to be durable or look good. remember that some primers and paints need time to cure and let gasses out. those gases will make the paint lift or something.

unless you are doing a paint that will be abused dont do it.
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Old 05-04-2006, 08:31 PM
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Let the primer set until the next day... reduce your last coat of primer so it lays down slicker.. then bc/cc the next day after you tack it off... you can lose somewhere up to 15% adhesion by doing this... not astronomical, just letting you know.. it wont be the end of the world
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Old 05-05-2006, 12:27 AM
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I have to tell you, it could be "ok" or it could be GREAT like with epoxy primer, or it could be a disaster.

What exact primer are you working with?

And most important, WHY are you priming it?

You could simply get a "primer/sealer" and do it with a product designed to do exactly what you are asking.

Brian
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Old 05-05-2006, 06:19 AM
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If you use a 2K primer and let it set a day, it has to be sanded
before painting,
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Old 05-05-2006, 07:59 AM
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Quote:
Originally Posted by jcclark
If you use a 2K primer and let it set a day, it has to be sanded
before painting,
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Old 05-05-2006, 09:31 AM
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Every tech sheet I've seen says 2K primer "must be sanded before recoating"
when more than an hour has passed.
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Old 05-05-2006, 09:28 PM
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No argument from me ole buddy... make sure you do what the tech sheets tell you... you know how those "illegal body shop" guys do things...

Silver car, yellow primer

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Old 05-05-2006, 10:02 PM
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I worked in a ford stealership, uhh err, dealership bodyshop in 1992. Being a young kid fresh out of tech school, I got a few jobs that weren't the most desirable to do. This included bones for the used car lot. There procedure when getting an old used hood or on something like the ranger bumpers that often needed painting was to sand with 80 grit on a dual action sander, prime heavy with lacquer primer, and while it was still wet and just flashing off to paint. But why, this is what sealer is made for, or an epoxy primer. If its epoxy, Spray it reduced just a bit so it lays down good and after proper flash time for the sealer you are using, spray your paint. Some epoxy primers are fairly thin is it is and require little or no reduction. Just make sure you are not sanding too course that the sealer won't fill your sanding scratches. Some polyurethane paints will really fill a fairly course scratch also. Read your tech sheets. If there is bodywork and most cases I spray a urethane 2k filler primer and block sand it. With the price of materials, why wouldn't you do it right the first time?
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