How long can you leave a piece in primer? - Chevelle Tech
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post #1 of 8 (permalink) Old Aug 25th, 00, 4:28 AM Thread Starter
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Kurt
 
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Assuming you prep correctly, and use quality primer, how long can you go w/o painting before you run the risk of problems?

I've got a few misc parts that I'd like to get ready for paint, but don't want to paint yet.

What about if it's one the car and exposed to the elements a couple times a month?

Thanks, Kurt
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post #2 of 8 (permalink) Old Aug 25th, 00, 7:37 AM
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In a perfect world, a "primered" metal part shouldn't even be outside overnight!

What I'd recommend is that you spray a good layer (or two) of PPG "DP" sealer over the item after you are done working on it. This will keep out the water that can get through primers.

When you are ready to paint it, plan on sanding down the "DP" and re-priming the car.

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post #3 of 8 (permalink) Old Aug 25th, 00, 1:42 PM
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Actually, any URETHANE or epoxy primer is insoluable (urethane is better than the epoxy which is what DP products are) and can be left for months without a problem.

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post #4 of 8 (permalink) Old Aug 26th, 00, 4:55 PM
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PPG's DP series primers are self etching epoxy non sanding primers. If you are going to paint over it after leaving it sit, I would recommend using a primer such as PPG's Kondar and then sanding that before you squirt your paint. I had a car in primer (PPG's Kondar) for a whole year before my father and I painted it. All we did was sand down the old primer and reprime the car.

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Bryan Shook
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post #5 of 8 (permalink) Old Aug 26th, 00, 8:14 PM
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Please pardon an ignorant question about selecting and applying primers: can you apply these urethane or epoxy primers by brush or roller? How toxic are they? Would a regular respirator be adequate protection? What I'm considering is stripping/sanding one panel at a time while driving the car occasionally. The weather here isn't too tough on a car--no snow, salt air, salt roads, relatively low humididty, etc.
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post #6 of 8 (permalink) Old Aug 28th, 00, 6:23 AM
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The PPG DP primers need to be sprayed. Go to the PPG site for more information.

http://www.ppg.com/cr-refinish/phase1/frmHome.asp
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post #7 of 8 (permalink) Old Aug 29th, 00, 4:58 PM
DG
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I'd add an echo for Urathane PPG primer. I got mine color-tinted. My body man said after I sprayed it, I could drive it like I stole it. Tough to live with the light-green primer color tho'.


I have heard that once it's painted, consider it finished. So, be a while till it gets paint.

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post #8 of 8 (permalink) Old Aug 31st, 00, 8:08 AM
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I am a big fan of the "tint prime". Martin Senour paint (available at NAPA auto parts) has a tint prime that has very vivid colors. My Gran Sport is in a bright red right now, damn near looks like paint. I will paint it in a Chry. Flame red base coat with only three or four pints of color because it is already red. And this primer also has UV protection for the UV that gets through the paint.

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