Finish on M2

[yoopertool]

I run stainless steel parts most of the time and we can electropolish them or passivate them to get a real nice shiny finish. I am messing with some parts made of M2 steel and would like to find a way to obtain a better finish than what I get off the machine. I would preffer not to resort to buffing these parts because there will be thousands and that just doesnt sound like much fun! Any help or suggestions would be appreciated. Thanks

[rmossmachinist]

Have you thought about using a rotating tumbler

[yoopertool]

I have only ever used tumblers in the past for mass deburring processes. Can you change the aggregate to promote a better finish?