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Reply to "BEST BARE METAL COATING"

I have used POR15 and epoxy primer.
To make a long story short, I would use epoxy primer. Its bullet proof, sticks to everything (bare metal, paint, bondo, etc) and also provides a vapour barrier (as Comp said).
In my experience it also adheres way better than self etching primer and you dont have to worry about the moisture getting into it.
Will
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