Operators can't be too careful in selecting abrasives for these tools. A typical straightshaft grinding tool has a maximum speed of 1,600 RPM; Fein's MSh 635 die grinder achieves 48,000 RPM. This is a speed differential of 30to1. Any tool intended for a maximum of 1,600 RPM would likely disintegrate at 48,000 RPM, and injuries could result.
Grinding, polishing, blending in hardtoreach areas
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