That's what I thought, thanks DrLucifer. I was certain it was just getting finer and finer.
Aluminium powder CAN be made successfully by employing a coffee grinder, this has been tested/proven by myself!
I mean, its not exactly 400mesh when your finished, but its fine enough for use in Al/FeO thermite mixtures, and it makes pretty fuckin good flash powder, Al/KmNO4
Nice idea with the salt, Ill definetly give it a try because I know it'll work from experience.
Unlike you, ApprenticeCook.