Im getting ready to spray a Semi truck and while sanding body down the old paint came off the aluminum rivets and then it transfered that black stuff like you get when polishing to the rest of the body. I tried to keep sand paper changed as much as practial . Using 220 grit on a DA Am going to cover with Omni epoxy then Omni bc/cc. I have read about 90 pages on here and sean nothing like this.
Will a good wash with dish soap then wax and grease remover be good.
Makes 2 I done 1st and last all at one time (I think )
