Quote: Another hi-jack: Some will put filler on bare metal, block, then prime. Others will prime the whole body, then start the filler work. What do the professionals think?
Always do it over epoxy.Filler is like a sponge,it will absorb moisture and cause rust under it .Epoxy blocks moisture . That way you can have a piece of mind knowing that you won't have to deal with rust issues down the road
