Working on 1950 frame, pressure cleanded scraped mud
tried da sander with 150 grit and its taking the surface rust off, theres no pitting or serious rust on this truck, i sanded to the black,
i read about sandblasting to bare metal, is this necessary? Is my da sanding and removing surface rust okay? whats the hardest grit i should use without damage? Then do i still need etching primer or can i use a rustoleum primer before painting the frame? Thanks for the help
