Aluminum oxide is a very hard mineral that maintains sharp points on the grains much longer than natural abrasives such as emery or garnet. The abrasive grains are adhered to the sandpaper with some space between them, known as open-coat construction, to minimize the buildup of dust on the surface of the paper, which would otherwise load the abrasive points. Loading often results from sanding soft materials and can clog the abrasive, shortening the usable life of the sandpaper sheet.
3M 02117, Paper Sheet 346U, 50 D-weight, 9 in x 11 in, 7000120222
$1.29
Factory Stock, 7-10 Day Leadtime
3M Paper Sheet 346U is constructed of aluminum oxide and comes in a range of grades and sizes to accommodate many different projects. The paper backing is durable for coarse sanding, yet flexible enough to be used on curved surfaces. Its cut-rate and durability make this an excellent choice for blending the joints of connecting pieces in wood- and metal-working.

3M 06742, Overspray Protective Sheeting, 20 ft x 250 ft, 7000120043
3M 36864, Dirt Trap Material Floor Dispenser, 56 in, 7000119908
3M 08025, Adhesive Sealant 740 UV, Black, 600 mL Sausage Pack, 7100057385, 12/Case
3M 31663, Cubitron II Net Disc 80+/180+/320+, includes 6 in discs and sheets, Job Pack, 7100251881, 100 Packs/Case
3M 76751, Roloc Disc 777F, 60 YF-weight, TS, 3 in, Die RS300V, 7010363900
Standard Abrasives 78530, Ceramic Pro Type 29 Flap Disc, 645145, 7 in x 7/8 40 Y-weight, 7010369548, 10 per case
3M 36882, Self-Stick Liquid Protection Fabric, Blue, 56 in x 300 ft, 7100169350
3M 19764, Utility Cloth Sheet 314D, 9 in x 11 in P320 J-weight, 7000000352
3M 30190, Trizact Hookit Foam Sheet, 2-3/4 in x 5-1/2 in (70 mm x 140 mm), 3000 grade, 7100072763, 5 sheets per pack
3M 34573, Cubitron II Net Sheet Roll, 120+, 115 mm x 10 m, 7100247507, 6 Rolls/Case
3M 34576, Cubitron II Net Sheet Roll, 220+, 115 mm x 10 m, 7100247509, 6 Rolls/Case
3M 34554, Cubitron II Net Sheet Roll, 220+, 80 mm x 10 m, 7100247496, 6 Rolls/Case
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
Dynabrade 15420 Dynafile III Abrasive Belt Tool
3M 34556, Cubitron II Net Sheet Roll, 320+, 80 mm x 10 m, 7100283765, 6 Rolls/Case, (Previously Item# 7100247340) 
