M marcusw_79 New member Jul 7, 2010 #1 I bought a primer from an auto parts store. I water sanded it down with 400 grit sandpaper, but portions of it looks rough and like it may have pinholes in it. The paint wouldn't cover it up. What could that problem come from?
I bought a primer from an auto parts store. I water sanded it down with 400 grit sandpaper, but portions of it looks rough and like it may have pinholes in it. The paint wouldn't cover it up. What could that problem come from?