hey spazz.....i used birchwood caseys perma blue for steel and it came out with a streaked look on the brass....you need to rub down the brass with a plastic scrubbing pad to kind of polish it....then take some Q-tips and dip them in the perma blue and wipe it on kinda fast and keep the Q-tip wet....and make sure you get it covered pretty fast and have a pail of water handy to wash the part as soon as you get it covered....i did it that way so that it had that old look to it with the blotches and streaks to it....so it looks like age did it to it.............bob