I try to but it comes out with little bumps that all need to be sanded off. It is not smooth like regular paint. I am going to use the primer, then Silver then the colors of ROTJ so the metal color will be under the colors when I weather it.
Automotive primer tends to be thick and gritty because it is used to fill in the imperfectiones left in the surfaces of the area being primed, it's ment to be sanded after being applied in a # of coats to produce a VERY smooth surface.
smoothest stuff i have found is the cheap stuff from walmart, i use it for everything non automotive
If you are using sandable primer, remember that it is probably 40% talc, thats why is is bumpy, just build up the coats then sand the top of it off, its a waste of time and paper to sand in between coats on the primer
If you are doing a nice fiberglass helmet or FG armor i would recommened a sandable primer sanded smooth then use some autommotive epoxy primer as a sealer.
[qoute]For a finer spray place the can in a bowl of hot water for ten minutes before spraying. The heat causes the paint to come out much finer.
the outside temp should be pretty hot as well for this method