Bare Metal Prep in Technical Posted February 15, 2010 SKIP, If you are referring to abrasive blasted metal I suggest thoroughly cleaning and degreasing the parts prior to blasting as the blasting can drive the contamination into pores in the metal as you strip the part. In quick succession clean with clean compressed air only and follow immediately with epoxy primer before flash rust can occur. Now apply filler ( I use Rage Extreme ) if needed. Sand. Prime. Sand. Clean with PPG DX 320 or Dupont 3812S or equivalent not wax and grease remover. Tack wipe. Color. I've used Por 15 on floors and like it.