"Rock Tumbler grit", also known as "rock polishing grit", is actually a silicon carbide powder that is much harder than the types of rocks that are commonly polished in the rock tumbler. If it is tumbled within a barrel with rocks and water the abrasion caused from the grit particles https://trevorjkjmk.losblogos.com/28477054/examine-this-report-on-titanium-silicon-carbide-knife