MarkLX200 posted:4" PVC pipe long enough to slide the shell into with a flat cap glued on the bottom end so it will stand on end. Both pipe and cap bought at Home Depot. About 4 quarts of 91% alcohol. Let it set for a day or two and you will be surprised how easy it comes off with a tooth brush.
I got a 19 x 8 inch clear plastic container filled with 1.5 gallons of 91% and its working great right now. I did not think of the PVC idea