Custom Abrasives: Complete Guide to Types, Materials, Applications & Cost-Per-Part Optimization By Strobels Supply Technical Team | Industrial Abrasive Specialists since 1940 Custom abrasives are made-to-order abrasive products belts, discs, wheels, or sheets engineered to specific dimensions, grain types, grit sequences, and backing weights that standard off-the-shelf products cannot match. Industrial shops use them when machines run non-standard sizes, when materials demand a specific gra …