I just discovered that this tool exists and thought some of you might find it very useful. It is used by jewelers and crafters to make a too-small-hole larger.
Here is what Beadsmith writes:
Includes small and large reaming points, plus a 45°edge reamer.
Features a hollow handle for storing diamond points; an easy release chuck that fits into the aluminum housing so that it releases instantly when the collet is unscrewed; an anodized aluminum handle; and a rust-resistant brass chuck.
Very versatile, easy to use, and trouble free!
Now I have never had any trouble with our Miyuki or Toho beads, but I know sometimes there are gorgeous beads or crystals with holes that are just small enough to make working with them a true pain.
So here is a tool to help with those and enhance your whole beading repetoire!