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bigskycountry Mar 15th, 08, 10:23 PM Got a tough to get at rust spot on the roof of the car at the top of the pillar. Ground out most of it, cant get it all unless it is cut out and patched. Anybody use Por15 to seal it, and then use Filler, to cover bad spot? Rowdy Mar 15th, 08, 10:31 PM Sand blast that particular spot. davis95 Mar 15th, 08, 11:02 PM Sand blast that particular spot. ...or use rust killer, POR or epoxy over it and then prime and paint. BlueSS454 Mar 15th, 08, 11:02 PM Ditto. Use a spot blasting gun. It will take all of about 30 seconds to blast the rust away. FWIW, I wouldn't use POR 15 on a rusty trailer let alone under body filler. | ||