I was watching one of the Discovery type channels this weekend.  The show
was about paleontology.  To remove the last trace of crust from the bones,
they were using an air brush\sand blaster type tool.  It was small and used
baking powder as the abrasive.  The tool was really removing that last layer
of scale from dinosaur bones.

I really would like to have a small, or semi small, tool like this.  It
looks like it would be great for small jobs on rust and blemishes.  Sort of
like a Dremel Tool for cleaning.  Does anyone know where I can get one at a
reasonable price?

Bill