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 02116, Paper Sheet 346U, 60 D-weight, 9 in x 11 in, 7000120221
$1.11
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 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
3M 11412, Roloc Disc 361F, 36 YF-weight, TR, 1 in, Die R100N, 7000045092
3M 11137, Roloc Disc 361F, 50 YF-weight, TR, 1-1/2 in, Die R150S, 7000045094
ACS Diamond Cloth Belt, CX1250 5/8" X 120" 125U
3M 08301, Ultrapro Autobody Sealant, 08301, Tan, 5 oz Tube, 7100142901, 6 per case
3M 01328, PSA Cloth Disc 348D, P180 X-weight, 3 in x NH, Die 300V, 7000045068
3M 87449 Silver Depressed Center Grinding Wheel, T27 Quick Change, 9 in x 1/4 in x 5/8-11 Center Hub Thread, 7010409732, 20 per case
Standard Abrasives 32953, PSA A/O Disc, 711880, 2 in x NH, 60, 7010310798
3M 03738, Scotch-Brite Cut and Polish Unitized Wheel, CP-UW, 7A Medium, 3 in x 3/4 in x 3/8 in, 7010364917
Dynabrade 15420 Dynafile III Abrasive Belt Tool
Dynabrade 95848 Dynabrade Gear Oil
3M 29834, Sanding Screen, 100 Grit, 18 in x NH, 7100160819
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
3M™ 72016, Remote Alarm & Strobe 529-05-20, Audible, 7000131708, 1 EA/Case
Insize 4209-4, LONG HANDLE TELESCOPING GAGE, 1-1/4 ~ 2-1/8", 6928640311567
3M 24049, Wetordry Cloth Disc 281W, P1000 YF-weight, 8 in x NH, Die 800JM, 7000045052
3M 06586, Marine, Adhesive, Sealant, 4000, UV, White, 400, mL, milliliter, Sausage, Pack, 7000121532, 12/ case
3M 01326, PSA Cloth Disc 348D, P240 X-weight, 3 in x NH, Die 300V, 7000045069
3M 23897, Cloth Belt 777F, 60 YF-weight, 1 in x 18 in, Fabri-lok, Full-flex, 7010307894, 200 per case
3M 20930, PSA Cloth Disc 348D, P120 X-weight, 1 in x NH, Die 100N, 7000118916
ACS 1/2 in x 18 in Diamond Metal Bond Belt, 120M/125u
3M 65033, Scotch-Brite Diamond Wheel, 645DC 6 in x 1/2 in x 1 in, 7010365574, Box of 3
3M 20922, PSA Cloth Disc 348D, 60 X-weight, 1-1/2 in x NH, Die 150S, 7010326528. 
