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Old 02-10-2007, 06:39 PM   #1
TeamTruett
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Default POR 15 on sandblasted metal: do I need "Metal Prep"

Is it needed after sandblasting? I will blasting the frame but since its winter here in NY, rinsing with water outside isnt an option. Spraying water on freshly blasted metal seems wrong anyway...
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Old 02-10-2007, 07:02 PM   #2
MosportGreen66
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Sorry guys. I completely misread the thread question.

Last edited by MosportGreen66; 02-11-2007 at 12:19 AM.
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Old 02-10-2007, 07:17 PM   #3
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I JUST HAD MY BUMPERS CHROMED AND THE GUY THAT DID THEM TOLD ME TO USE POR-15 ON THE INSIDE. He had bead blasted them I asked if I need to do any pre and he said no Just put the paint right over the blasting
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Old 02-10-2007, 07:28 PM   #4
67-427ci
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I just finished my entire frame with POR-15. I used Metal Prep on the surfaces I cleaned using a wire wheel. Anything I sand blasted got POR-15 over the blasted, bare metal (no need for a primer). Give it a few days to cure and it will be rock hard.
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Old 02-10-2007, 07:28 PM   #5
ml1955
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Default Por 15

Follow the directions to the letter. If they say use metal prep, use it. They don't guarantee the material if you don't follow the instructions. If not put on right, the stuff is a mess to deal with. What ever you do, don't get any water in it while you are working with it, a drop of sweat will ruin a batch. Dry, dry and drier is best.
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Old 02-10-2007, 07:49 PM   #6
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Please complete your personal information for the Corvette Forum .

No tickee, no laundry .

POR 15 products are absolutely great. If weather prevents correct application ... wait. The environmental conditions will get better .
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Old 02-10-2007, 07:51 PM   #7
GTR1999
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I use it a lot on the trailing arms, boxes, and diff's I rebuild and blast. I always use the Metal Ready and rinse it off after 30 minutes and let dry good before painting it. I used it on my frame with the body on and cleaned the frame. It chips off where jacks jack stands are. If I was using POR15 for a blasted bare frame I would use the same prcedures.
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Old 02-10-2007, 09:06 PM   #8
Mike Terry
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I have used PRO 15 several times on exhaust manifolds, I just sand blast, wipe clean and put on PRO 15 then start the engine and let it run for about 15 min. to bake it on. If you read the directions you will need to bake it on ( I think 450 degrees ) if not it will never dry. Read directions to be sure.
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Old 02-11-2007, 10:51 AM   #9
JPB04619
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Default por 15

when using por 15 i always heat the metal before coating to drive out the moisture...if you coat with moisture present it will rust under the coating...i use a propane torch when ever i can .if you don't beleive me try heating what you think is a bone dry part with a torch and watch the moisture being driven off john b
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Old 02-11-2007, 10:51 AM
 
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