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.
Brass Cleaning « Daily Bulletin
DIY: Wet Media Tumbler (Pic Heavy) Indiana Gun Owners - Gun Classifieds and Discussions
Rotary Tumbler « Daily Bulletin
diy case tumbler (wet rotary tumbling)
Wet Tumbling Brass The Complete Guide
DIY Rotary Wet Tumbler for Brass Cleaning Part 1
Brass Tumbler « Daily Bulletin
Play With Your Food: Clean Brass With Rice :: Primal Rights, Inc
WeldingWeb - Welding Community for pros and enthusiasts
Cleaning your brass cases for reloading
Brass Cleaning Options — Tumbling, Ultrasonic, Chemical & More « Daily Bulletin
2 Best Ultrasonic Gun & Case Cleaners [Hornady vs Lyman] - Pew Pew Tactical