Abrasive Grit - Silicon Carbide

Graded grit means that all of the particles are very close to the same size. Highland Park graded grit is be carefully processed to insure that all of the particles are close to the same size resulting in consistent and repeatable grinding and polishing stages

Ungraded grit has a range of particle sizes.  For example, our 60/90 grit contains a range of particles sizes ranging for slightly smaller than 60 grit and slightly larger 90 grit.  Highland Park ungraded grid doesn't require the same level of processing as graded grit and thus sells for less.  Ungraded grit is fine for course grinding but the use of ungraded grits in later grinding and polishing stages leads poor finishes

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