Okay,I've had my inner fenders,core support,top grill support and top radiator cover sand blasted .I've coated them with POR-15.How do I get them smooth for painting?What grit sand paper and so on ?What are the steps to get a nice job?......Thanks ,Mark

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72ss (clone)
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Our last fight was my fault: My wife asked me "What's on the TV?"
I said, "Dust!"

Mark, first off I am not a big Por-15 fan, but what does it say in the POR-15 tech sheet?

Did you brush it on? I believe that POR-15 can be sprayed and then painted over without sanding. If you have a brushed surface, then you may be in trouble. To smooth it out may need so much sanding that you go through. If it is sprayed, then a light sand with 220 and then an epoxy primer sealer then paint should do it.

It is a little late to tell you this but...
I personally would sand blast then etch prime, then black epoxy, then black SS urethane. No sanding in between products, it is done in an hour or so.

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1965 Buick Gran Sport Convertible
1965 Buick Skylark H/T
"Fan of most anything that moves human beings"

Yup ,I'm in trouble . Thanks for the post.