Call Dan Lord at C&M Topline in CA...send him samples and he will develop your process. I have only bought media from him for our little Burr King, but they have a full line of product, and are significantly less money than anyone else. Finding the right combination of products is not easy with the numerous choices of media and juice, so rely on Dan, but support him with your purchase. In a previous life, we had one of their 3 cu/ft tumblers...ran daily for at least a half a dozen years with ZERO problems - I am not affiliated, just a satisfied customer.
I haven't run any aluminum (only brass) in a polishing application, but everyone I have talked to says hours to polish with walnut shells, like 10-12 hours, but they look like chrome when they're done.
Steve |