a disk sander is used for smoothing a large area instead of using sandpaper. :)

drill dial saw dozuki (a Japanese saw) disk sander

If the sander pad has accumulated debris, try cleaning with compressed-air or a vacuum. The hooks on the sander pad become damaged over time and will not engage the loops on the sanding disk, especially if you apply a lot of pressure when using the machine. Buy a replacement pad. The Rigid line is not that old, so they should be readily available. Unless you are using the sander for sculpting or shaping, the weight of the sander alone should be all that is required. If not, you need to use a lower grit.

Sander Levin's birth name is Levin, Sander Martin.

Casey Sander's birth name is Clinton O. Sander.