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.
Wet Tumbling Brass with the Lyman Cyclone - The Armory Life
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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
Brass Dryer « Daily Bulletin
Hornady Rotary Case Tumbler – Clean and polish brass cartridge cases to a brilliant shine with the rotary action of this tumbler and stainless steel
Hornady Rotary Case Tumbler – This Wet Tumbler Cleans and Polishes Brass Cartridges Quickly and Efficiently – Holds 5lbs of Cases, Includes Steel
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Wet-Tumbling Cartridge Brass with Rotary Tumblers « Daily Bulletin
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
Review of Stainless Tumbling Media Brass Cleaning System « Daily Bulletin