Quick demonstration of a drywall power sander. Very fast way of sanding drywall. However, there are some negatives:
1. Doesn't work so well on cornerbead or inside 90° corners, so I don't use it there.
2. I find that the joints still need a quick polish with 180 or 220 grit paper with a pole sander.

Overall, sanding is still much faster utilizing a quality power sander, such as the Festool planex easy, which I'm using in this Video, combined with a traditional pole sander vs. just pole sanding entirely.

Wear a good respirator if you don't connect it to a vacuum, or be prepared to blow drywall mud out of your nose after.