I live in a 100-yr old house and have a beautiful claw-foot tub in need of new paint on it's outer skin. The interior finish is fine but exterior seems to have been brush-painted many years ago with lead paint that is now cracking and flaking. I'd like to paint over it with enamel to seal it but I need to sc**** and sand lightly -- very lightly -- first. I thought about spraying the surface with water from a spray bottle as I sc**** and sand, to minimize dust and particle travel (I've heard of this method being used with other materials). Of course I plan to take the appropriate safety measures like mask, drop-tarp and appropriate disposal. Any thoughts?