Get more life from abrasives
Slow things down
High disc speeds create loads of friction, and the resulting heat draws resin from the wood, rapidly clogging the abrasive. A combination of a gummed-up disc and high RPMs can cause black marks or burnishing on the wood -- where wood fibers compress until the surface becomes glossy and won't accept finish. Burn marks on your workpiece and black residue on your disc can also be signs of too-high speeds.
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