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Hello! I am looking to buy an assortment of grits for my new Powermatic PM2244 drum sander. It takes 3” wide paper. Can you help me decide between aluminum oxide vs zirconia? My first project will be running 1000lf of Doug fir trim boards through it to get a finish ready surface, but u plan to use it for various hardwoods on other projects. I’d love to better understand the pros/cons of each optionHey there! First off, congrats on the new Powermatic PM2244, that's a solid drum sander …

Klingspor’s Woodworking Shop offers YOU industrial quality Klingspor Abrasives! You'll find most if not all of the materials in our  belt, disc, roll, and sheet products. Shop Sandpaper by Material:   Aluminum Oxide | Alumina Zirconia | Silicon CarbideProduct Recommendations for Specific Applications ALUMINUM Alumina Zirconia for rough grinding. Aluminum Oxide for general purpose grinding and finishing. Open coat is useful for softer type …