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I do not like any of the por products ! if you have rust you simply remove it as Chris stated!
trying to convert it just is a half assed way to deal with it.
as for stripping metal down to bare we have only used the glasurit metal cleaner pre products.
you get a good quality epoxy primer over the bare metal ASAP .
if we can't get a primer over the bare with in at the most a few hours ofter it's stripped we tend not to strip more than we can to in that window.
Porsche owners are always worried about the galvanized coating on the cars.
this strikes me funny! Porsche was one of the 1st auto makers doing it but shortly after every auto marker started doing the same thing to the point everyone was doing it.
the galvanized coating is more for under panels and seams than the outer body panels. the outer panels you can get the same protection from a quality primer.
if your doing a patch panel you use a chromated or zinc based primer on the back side and where the welds are.
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