Description
1kg Corn cob media for dry tumble polishing.
You can tumble soft rock as normal until the polishing stage.
Make sure the tumbler and rocks are completely dry. Then simply add tin oxide or similar to the corn cob media in your tumbler (dry) to tumble soft or hard to polish stones such as copper minerals like chrysocolla and malachite. Also soft rocks found along beaches especially in Western Australia. Petoskey rocks are also polished this way.
Corn cob media can also be used to polish brass by adding the appropriate additive.
You can choose from a finer grit 16/30 or a coarser grit 1/8″.
Each bag is 1kg
