Had one of these delivered today from Optics Planet in the U.S. Now I can combine cleaning and polishing into the one process which should save me around 90 minutes per batch. Keen to get in some range time now as I don't have any dirty brass to test this tumbler on. I need to modify the 0-3hr timer on it as it's the mechanical type which means I can't turn it on or off using a programmable timer. To save time I quite often plug tumblers into a power board with a timer so I can set the tumblers to run while I'm at work so the brass is ready when I get home.
I believe Lemi Shine is the pick of cleaners to add to the mix though I'll try regular ultrasonic solution till I can source the Lemi Shine.
I'll post some before & after pictures once I have some dirty brass to clean. By all reviews I've seen on the net these are the ducks nuts of tumblers, hopefully the results match the hype.