[maple_leaf_eh]

Are you sure you didn't steal that from some hospital nursery ward?

The gun community rarely sandblasts any gun parts, but they do need to vibrate and clean cartridge cases. The standard media include walnut shell pieces, corn cob pieces, apricot pit pieces and white rice. The latter surprised me, but anything that is hard surfaced and slightly textured seems to be required. Somebody lately found a supplier of hard plastic beads at his wife's craft supply store. He claims they work like a charm. I don't know how any of this is going to flow through a nozzle, but it is the thought that counts.

Cleaning regimes for cartridge case tumblers usually include some form of chemical rejuvinator and household dryer softener sheets. The mesh turns filthy and the media gets cleaner.