I'm not sure what its called but I heard of a process where the paint gun is positive charged and grounded too the part to be painted ( or primered ) and it will pull the paint onto the metal . If you would cut open the windsheild post ( to chop the top ) you would see paint ( or primer ) inside the post . My buddy had his stock car frame painted this way and later on when he needed to replace a wrecked section , the inside was completely coated ! He also said that there was almost no overspray while it was being sprayed .
