How to Polish Rocks With a Dremel Drill | Our Pastimes
Place the rock inside the clamp so you can reach a good portion of it. Holding the rock in a clamp helps prevent the possibility of grinding your fingers as you polish. Attach the lowest-grit sanding bit. Plug in the Dremel. Grind the entire surface of the rock with the grinding tip. Use just the top half of the bit to prevent deep scratches.