ya it turned out nice
how I do a brushed finish on stainless or aluminum is a very easy process
use coarse scotchbrite and spray the surface and the pad with wd40 and run the grain all in one direction in one continious motion from one end to the other and continue to scrub in one direction until the surface turns black wipe off the blackened part to check the work and repeat several times or until you achieve the desired effect, this dont take much scrubbing on aluminum, remember to scrub in the same direction as straight as possible. you can actually use a small stainless wire brush about the same size of a tooth brush make sure it is a stainless brush and not carbon using a carbon steel brush will cause a stainless gun to rust! use the brush the same way as the scotch brite by brushing in one continious motion from end to end.
you can go over it with scotchbrite and wd40 the wd40 really makes the brushed effect PoP.
satin finishes are best achieved by using a sand blaster with walnut hulls