Laguna Tools SuperMax Pre-Marked Abrasive Roll, Aluminum Oxide, 80 Grit SUPMX-60-9080

Aluminum oxide is the most common abrasive in woodworking sandpaper. It works well on a number of materials, including bare wood, painted surfaces, and metal. In its most basic form, this furnace-produced mineral does not fracture easily. Instead, it tends to wear down until it becomes too dull to cut efficiently. More expensive forms are friable or semifriable. A number of companies offer more than one grade of aluminum oxide in sandpaper. More expensive, heat-treated versions of the mineral tend to go into higher-priced product lines. With its familiar brown and black flecks, generic aluminum