There ya go. Plug in wall timer would be easy.I use a lyman vibratory tumbler with corn cob media and a squirt of flitz tumbler media additive. That will bring you a mirror finish.
If you want something a little flatter, more like the factory, use walnut without the polish.
I haven't tried wet tumbling, but it has a following. I'm too forgetful to throw my brass in with a bunch of stainless bits. Maybe a timer .... hmmm
I still have my vibratory tumblers although I have not used them since I started wet tumbling about 6 or so years. The only downside that I can find is moisture removal. It is not hard, just not fast.
Hi Leo! Long time since I have seen you on here. Hope you are doing well!Nothing fancy here. Dry tumbler, corn cob media. When it starts getting too dirty, a few strips of dryer sheet helps clear the black dust. About 1/2 way through the media life, I add some Dillon or Midway polish. If I am out of that, Turtle wax liquid car polish works too.
I started cleaning brass when I was in a Bullseye League in the mid 70's. I was the youngest by far and all the old timers laughed at me. Between beeswax lube on soft lead cast bullets and light charges of that smokey old Hercules powder, their brass was almost black. That did not stop them from grabbing a .45 pistol with one hand and having the bullet holes touch in the 10 ring.
I still like clean, shiny is not important, but it is nice.