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Old 05-12-2004, 04:32 PM
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por-15 surface prep

I looked thru the old posts but I cant find a clear answer to my question, that is if por-15 is applied to a freshly sandblasted surface with no other prep other than the blasting (no acid/water treatment or primer) will it work ok?

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Old 05-12-2004, 06:33 PM
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thats all it needs!just make sure its got no oil or grease on it
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Old 05-12-2004, 10:53 PM
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some people said it might peel if its just clean surface, it likes to be on rusty surfaces
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Old 05-13-2004, 10:08 AM
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Don't get confused here. A clean SANDBLASTED surface will be ok. A clean smooth or just raw metal surface will not.

POR 15 will stick to rust or clean SANDBLASTED surfaces.
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Old 05-14-2004, 12:23 PM
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Thanks, After a lot(and I do mean A LOT)of hours chipping,scraping,bleeding and swearing, I finally removed the 40 year old undercoating from the underside of my new project(64 1/2 mustang). I then sandblasted every remaining trace of paint and visible rust from the surface. I know the next step is supposed to be to etch with acid and then wash with water but when I looked at that pristinely clean metal I just could not bring my self to spray water,let alone acid on it. This is the first time that I have used por-15 on a large area and the results are fantastic! I sure hope this works and I belive it will,time will tell.
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Old 05-14-2004, 12:54 PM
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As long as it is not smooth metal it will work.

Troy

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Old 05-14-2004, 01:44 PM
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Hi Troy,
I was in a jobber in WV a week ago and a guy came in with this stuff peeling allover. What he had done was use a 24 grit grinder and jobber told him it would only work over rust or sandblast with sand. He actually was reading from a tech sheet.

I don't know if thats the case or not just pointing out to you.
Barry
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Old 05-14-2004, 03:09 PM
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POR-15

I sandblasted my frame and painted on POR-15 Semi Gloss with a paint brush. I used no other prep. just make sure there is no oil on it,and that you wear gloves and old clothes. It's a bear to get off!! Good Luck ROBO
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Old 05-14-2004, 04:41 PM
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If you want to use por 15 on smooth metal, you can by using there product called Metal Ready, it etches the metal.

They recommend it on any surface that you are going to coat with por 15. Even rust.

Troy
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