> Using modeling clay, build
 > a volcano-looking dam around the drill site, sloped according to the angle 
of
 > the glass you're working on.  (This won't work if the glass is in a vertical
 > position.)  Fill the crater of the volcano with a mixture of oil and
 > carborundum abrasive.  

Put something UNDER the glass, because when the drill breaks through the stuff 
will RUN OUT all OVER whatever is beneath.  Ick.

Other than that, excellent instructions.

  --berry (been there, done that, had to clean it up...)

Berry Kercheval :: Xerox Palo Alto Research Center