Clean to bare bright shiny metal, coat with two coats of Etch Primer, lightly rub down then a couple of coats of top-coat.
Job done.
Ive found that rust repair success depends on how well the metal is cleaned of rust traces Before any paints are applied...
Over the years, Ive tried all sorts of so called Rust Cures, claiming neutralization, rust-penetration etc etc--Nothing actually does what it claims, Only a back to shiny-steel and etch-prime plus top-coat does the job with reasonable success.
POR-15 is just mediocre--Defo NOT worth the price!
Hammerite--Might as well NOT Paint it at all--Utter rubbish!
Rust NEVER Sleeps.....
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http://i190.photobucket.com/albums/z...0TDnoplate.jpg
Alastair AKA H.C.II South Wales, U.K. based member
W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.
W114, 1975 280E Custard Yellow,
-Great above decks
needs chassis welding--Really will do it this year....