Expanding drums, 8″ x 3″

Expanding drums are useful for lapidary or glass work. They are designed for a variety of belts from garnet and silicon carbide to electroplated diamond or resin coated diamond. Expansion slots through the heavy rubber rim allow the drum to expand when rotated, locking the belt in place. Belts can be quickly changed by stopping the machine, slipping of the old one and sliding on the new. The resilient drum surface flexes to the gemstones contour to quickly remove grinding flats. The convex shaped drum provides the cutting action necessary to remove scratches. Sold without belt. 1″ center hole with a set of bushes.

Recommended maximum speed is 1800 RPM.

Caution; Do not run without a belt on, do not use diamond belts without water.