I'm new to "real" painting - so bear with me-
but how would you use sandable primer.
I'm using ppg epoxy primer - and it looks fine on most parts.
But I'm starting to think about doing the sheet metal, and I want to smooth out some of the tiny scratches and rust pits.
I'm assuming I would go with the epoxy first, then cover that with the sandable primer?
is the primer supposed to go on and stay on as one solid coat of primer that you sort of smooth out with sanding?
- or is the idea to sand most of that layer away leaving the sandable primer only in the little pits and scratches?
Or somewhere in between?
Obviously I'd use filler on anything deep.
Just looking for a general idea of how it's supposed to be use.
And curious as to which grit you'd do your final sanding with.