So bedlining my tub (u-pol raptor) and I've actually hit down to the metal for most of it with my sander. Thinking I will probably just take all the paint off (overkill, I know) but what do I have to apply to the metal to ensure that when I spray it'll stick? I already have acetone for the cleanup when I'm done, but for the bare metal I'll need....?
Also, would it be wise to maybe just coat the metal with whatever primer I might need for it, and keep the scuffed paint that's done properly and just spray the whole thing, if that makes any sense.
I know my prep work is going to be hardcore already, because it already has been, but just want to make sure I get everything right before I coat it permanently!