A 3M sanding block can accept multiple layers of abrasive sheets. When one dulls or becomes loaded with wood particles, paint, or rust, simply tear it off to expose fresh abrasive below it.

3M sells this sanding sponge by the case of 250 for $205 at its online store. Click on the image to open. ... The utility and acceptance of sponges, pads, and sanding blocks, ...

Soft-Sanders are lightweight, flexible manual sanding blocks in six profiles of three different densities, ... 9. 3M has been a staple in auto body shops for decades.