Thanks. So I can't just use sanding sponges? Or are they more for light duty sanding? I just need to do an 18' X 18' ceiling.
Is wet sanding even a possibility?
You can do the whole thing with sanding sponges.
Wet sanding is a possibility - it very good for occupied homes due to no dust. It helps if you don;t have big lumps and ridges. Chances are you'll still need the 45 angle sanding sponge to get the corners appearing crisp. Also, for lap marks and things like that, you can shave them off before the coat is fully dry by flexing your knife blade into a C shape with two hands, and holding it almost perpendicular to the surface, then drawing it along the lap mark. That can save you a lot of wet or dry sanding.