Using our tumbler item #TT140, TT140HS or TT140EX, place 3 pounds of stainless steel media in the tumbler barrel and pour water in until its 2"-3" above the level of the media. Put 1 tablespoon of compound in, or if the cases are extremely dirty, put in 2-3 tablespoons. You may then put up to 8 pounds of de-primed cases for polishing and cleaning. Run the tumbler for 3-6 hours. There is no need to prewash your cases but we do recommend that you de-cap them first. After draining the compound rinse off your cases with water and dry.