More and more shooters are wet-tumbling their brass (in liquid) with reusable polishing media, rather than using dry media in a vibratory tumbler. The wet-cleaning method works best with a rotary tumbler fitted with a water-tight, horizontal drum to hold your brass, cleaning solution, and stainless, pin-type media.
New Hornady Reloading Products for 2018 « Daily Bulletin
Wet-Tumbling Cartridge Brass — Some Smart Solutions « Daily Bulletin
How to build a stainless steel brass tumbler: Part One
Allied Brass Polished Nickel Brass Tumbler and Toothbrush Holder in the Toothbrush Holders & Tumblers department at, Brass Tumbler
Wet Tumbling Brass with the Lyman Cyclone - The Armory Life
Clean and Polish Reloading Brass
What's The Best Way To Clean Brass?
TFB Armorer's Bench: Using The Frankford Arsenal Rotary Tumbler LiteThe Firearm Blog
Using a Rock Tumbler to Clean Brass for Reloading
Wet-Tumbling Cartridge Brass — Tips for Great Results « Daily Bulletin, Frankford Arsenal Tumbler
2. Cleaning Your Brass - Wet vs Dry Tumbling.
Cleaning Rifle Brass - The Frankford Arsenal Rotary Case Tumbler, Lyman Turbo 1200 Tumbler
Hornady Australia Rotary Case Cleaning Tumbler 220v 050221
Frankford Arsenal Tumbler Pro Kit Inlcudes Rotary Tumbler Lite Wet/Dry Media Separator Brass Dryer and 2 Lbs of Stainless Steel Media 1199453, Frankford Arsenal Tumbler