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Re: Protecting metal for a month??
Mike,
I'm going to echo what others have said (and disagree a little on some) but I figure you need as much help on this one as possible as the outcome can be a nightmare. I would never apply any kind of wax or lube for rust proofing after etching the surface with sandblast. The blasting creates small surface marks that makes paint stick great, but will hold oil or wax terrific also. I can't imagine trying to degrease that surface. And MEK or acetone are very dangerous to your body, so the less you use, the better.
The moment that the blasting is finished, rust is starting to form at the microscopic level. Therefore, only blast immediately before painting.
Variprime, excellent stuff, easy to work with, very forgiving. I've used it on Alclad Aluminum airplanes prior to polyurethane topcoat(these are Dupont products available at good auto stores). Great results even though it is not made specifically for aluminum. But the variprime is made for steel and works even better on that. However, it does come off unexpectedly with solvents I wouldn't have guessed, such as alcohol. So test your epoxy top coat on a spot of Variprime before going the whole route.
Better yet, the best results and least work, would be to blast, then prime. That is the correct procedure, so why try to add work and possibly compromise the outcome?
Good luck,
Jack Dernorsek
N44057
Mike,
I'm going to echo what others have said (and disagree a little on some) but I figure you need as much help on this one as possible as the outcome can be a nightmare. I would never apply any kind of wax or lube for rust proofing after etching the surface with sandblast. The blasting creates small surface marks that makes paint stick great, but will hold oil or wax terrific also. I can't imagine trying to degrease that surface. And MEK or acetone are very dangerous to your body, so the less you use, the better.
The moment that the blasting is finished, rust is starting to form at the microscopic level. Therefore, only blast immediately before painting.
Variprime, excellent stuff, easy to work with, very forgiving. I've used it on Alclad Aluminum airplanes prior to polyurethane topcoat(these are Dupont products available at good auto stores). Great results even though it is not made specifically for aluminum. But the variprime is made for steel and works even better on that. However, it does come off unexpectedly with solvents I wouldn't have guessed, such as alcohol. So test your epoxy top coat on a spot of Variprime before going the whole route.
Better yet, the best results and least work, would be to blast, then prime. That is the correct procedure, so why try to add work and possibly compromise the outcome?
Good luck,
Jack Dernorsek
N44057
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