My wife dragged me kicking and screaming to brave the Christmas crowd down at WallyWorld (Walmart for you living in the real world), and I'm kinda glad she did. I found a Mini roto-tool (brand name Test-rite) for $10 US that works like a little dream. It's worth that much just for the bits and collets (seem to work ok with my regular Dremel tool). It doesn't have quite the oomph of a Dremel, but made short work of sanding down the wheels for my Bz-4, then cutting off some brass tubing. If you happen to run across one, snap it up quick....one great tool for the money.