Dremel Sanding Discs Common uses for the Dremel sanding disc include smoothing and shaping wood or removing paint or rust from metal surfaces. Dremel sanding discs have a finer grit than Dremel sanding bands. They mount on a Dremel 402 mandrel and provide a flexible surface that allows sanding in contoured and hard-to-reach areas. Use to smooth and shape wood and fiberglass. Also great for removing rust from metal surfaces Pack of 36