Worked very well. The dust bag contained most of the dust. The speed of the sander is 1200 to 3000 rpm. Not 0 to 30000 rpm. The sander will get into the edges of the walls and ceilings with the removable section of the dust guard removed. Leaving only a small area in the corners to hand sand. I also used this to remove wallpaper glue from the walls after striping wallpaper. I have used this on 10 rooms of drywall so far. No problems with sander. It is a smaller diameter than their pole sanders. I cut the paper down to size from my pole sander to fit. It is less than 9 inches in diameter.