For rock tumbling, glass etching, or dental work, finer grades are required: Aluminum Oxide - Amazon.com
Central Pneumatic 25 lb. Black Aluminum Oxide 70-Grit Abrasive Media
Depending on whether you need a small jar for polishing or bulk quantities for sandblasting, you can find aluminum oxide at the following locations: where to buy aluminum oxide
: Carries high-quality blasting abrasive, such as the ALC 25 lbs 60-grit , though some items are online-exclusive and cannot be bought in-store.
: Ideal for business-grade brown aluminum oxide in specific mesh sizes (e.g., 100 mesh) for heavy-duty industrial use. For rock tumbling, glass etching, or dental work,
Aluminum oxide is widely available from hardware stores, industrial suppliers, and specialized online retailers, with its availability largely determined by your intended use (e.g., sandblasting, polishing, or industrial applications).
: A reliable source for various grit sizes and quantities, from small 12 lb bags for hobbyists to large industrial orders. Aluminum oxide is widely available from hardware stores,
: Best for affordable, bulk blasting media. They typically stock 25 lb and 50 lb buckets of 70-grit black aluminum oxide.