When working with power tools (especially sanders) keep a shallow bowl
nearby with a bit of water and a sponge. Power tools generate wood
dust and, when it gets on the hands, the fingers lose some grip and can
actually become slippery. Not a good thing when you're holding
something razor sharp turning at 8000 RPM.

So every so often just pat the top of the sponge with both hands to get
them moist and rub them together briskly to dry them. You'll have a
lot surer grip on the tool after you do.

FoggyTown