I have spoken with Dupont Technical Support, three body shops, and a few other people knowledgeable in painting, and I get conflicting information. I want to know what is the preferred way to prepare bare sandblasted metal for body work.
The Dupont guy said to apply the epoxy primer first, DA it with 180 grit to bare metal over the repair area, then bondo, then sanding primer. This method sounds like the correct way to me, but the bodyshops say not to put bondo over bare metal. Supposedly moisture can get between the bondo and metal. When I asked the tech guy about this, he said there was no way for that to happen as long as there are no holes in the metal.
Anybody know the correct procedure for applying Epoxy Primer, Bondo, Sanding Primer over bare metal?
The Dupont guy said to apply the epoxy primer first, DA it with 180 grit to bare metal over the repair area, then bondo, then sanding primer. This method sounds like the correct way to me, but the bodyshops say not to put bondo over bare metal. Supposedly moisture can get between the bondo and metal. When I asked the tech guy about this, he said there was no way for that to happen as long as there are no holes in the metal.
Anybody know the correct procedure for applying Epoxy Primer, Bondo, Sanding Primer over bare metal?
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