There was a previous topic about painting over old basecoat where small parts of a panel were missing the clearcoat and the basecoat had been exposed:
What if the panel, like a hood, was completely free of any old clearcoat and only the old basecoat remained? Could the hood’s old basecoat be sanded with 400 grit sandpaper and then sprayed with the new basecoat over the old basecoat? Or would you need to spray primer over the old basecoat and then spray the new basecoat over the new primer? If so, what would be the correct primer to use? Primer/sealer, etching primer, primer/filler? Thanks!