It's that dreaded time of year......coin laundry. I've had my double barrel coin tumber running for two days. I quit using soaps & gravel. The coins themselves act as a good abrasives, and you don't have to work harder trying to remove all the soap and gravel.
Somebody was thinking below.
Not my machine, but it works!
http://www.youtube.com/watch?v=h7lXS9DknP4&feature=related
Somebody was thinking below.

http://www.youtube.com/watch?v=h7lXS9DknP4&feature=related