Thank you very much. I should have known that the first answer would be 'from experience' you find out how much to mix.
I do have the extra door with bullet holes. I will practice with that. Maybe, I can spray rustoleum to check (get an idea anyway) quantity. As for quality - I guess that has to wait until I get to the real thing.
Thanks again for all your advice
Last edited by oldbluetruck; 12/09/2010 7:33 PM.