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DC932
I was just watching an auto repair tv show where they stripped surface rust on a panel and then sanded it down to clean bare metal for primer. However, they said if you look very closely, the small slightly darker spots are iron oxide in the poors which will rust through over time. So, they treated it with a rust converter before primer. Is this something i should do before SPI epoxy, or will the epoxy keep those small spots from getting worse? I thought rust needed oxygen and the epoxy would block any oxygen from getting into the poors.