A medium-course walnut shell will not damage the surface it is on, but it will polish it.
12-20 Grit is a medium-sized abrasive.
100% Crushed Walnut Shells.
Use a low pressure of 20-60 PSI for materials that are soft or fragile. Over 80 PSI, the Walnut Shell Media lasts less time.
Made in the United State.
12 to 20 Grit Cours. It weighs about 8 pounds of crushed walnut shells. Walnut media blasting is great if you want to get rid of paint, grease, and other dirt from the surface of a material but keep the integrity of the material underneath. Glass, fiberglass, wood, plastic, stone, and soft metals can be cleaned and polished with this tool, as well as glass cleaner and polish. For use with blasting or vibratory tumblers, this is the tool for you. It’s safe for the environment and free of silica. People who have allergies should be aware of this. This media has walnuts in it.
I use it in a tumbler to clean brass and copper things that need to be cleaned. The corn cob media does a better job than the other medi. No, I won’t.
