how to adjust a belt sanding Related Question:
Can you adjust tension on a belt sander?
If the belt is shifting toward the side of the sander that the knob is on, then loosen the knob by turning it about half a turn counterclockwise. If the belt is shifting away from the side of the sander that the knob is on, tighten the knob by turning it about half a turn clockwise.
How tight should the belt be on a belt sander?
In basic terms, the amount of tension on the coated abrasive belt should be just enough to keep the belt from slipping on the drive wheel, and to keep the belt from tracking off the wood working machine. Some sanding machines have fixed belt tension.