I don't do many cases a year. After tumbling I dump the tub into a small container and rinse several times with cold running water in the laundry tub until the water looks clean. Final rinse with distilled water. You can buy cheap distilled water intended for steam irons at just about any store for about $1 a gallon. You can use it several times if it looks clean. I was going to try to collect discharge water from my large dehumidifier in the basement and try it. I have a couple hundred range pickup 223 cases that I cleaned two years ago and they are still bright and shiny.I put togeather a wet tumbler but I cannot seem to find the right mix to get my brass shiny. I use a 6" pvc pipe roughly 20" long, filled 1/2 brass and water, small SS chips, couple dabs of dawn, small dab of lemon squeeze and my brass comes out really dull. Any suggestions would be appreciated.