If you’re tackling sanding projects that require rugged, coarse-grit sandpaper, you need a belt sander. These machines use a spinning “belt” of sandpaper, which gives them more power than orbital or ...

A: Chatter marks on the product are most often caused by the sanding belt splice. A good way to check is to use a black crayon to mark the splice. Then, run a new, clean workpiece through the machine.