Originally Posted by beckybillrae
Por-15 adherese (sp) to rust. First you wire brush the metal, use their product called Marine Clean to degrease the metal, and then use their product called Metal Ready before painting on the Por-15. It is expensive, but leaves a very smooth, hard finish. You have to recoat it after 5 hours. It will fade in color if exposed to the sun, but obviously your frame isn't exposed so you don't have to worry about the appearance of the color. I used it & am very happy with it.
I used it too and this stuff is as hard as concrete. I did my whole frame with it. The amazing part is that when it is cured you can hit it with a hammer and it will not chip, at all, no matter how many times you wack it.