Bare metal needs epoxy primer. Body filler goes on epoxy primer (after it's been scuffed to give it mechanical tooth). Urethane high build primer goes over body filler and scuffed epoxy primer.
Do not open a can of chemical before reading the manufacture's technical data sheet and fully understanding what they instruct about sandpaper grits to be used, dry times etc.
Do not ever drill drill holes in the body to give the body filler an anchor. This is the best way to get your body filler to pop off the metal after you've painted it. This will happen every time because the exposed filler will absorb moisture and swell the filler while it rusts the steel from underneath.
Last edited by FootStomper; 10/04/2017 1:41 AM.
