Post #114067 by Kono on Sun, Sep 12, 2004 6:02 PM

I tried using diamond bits to drill through glass and I ate through several bits in just a few minutes. Of course, they were "flea market" dremel bits so I'm sure they were of inferior quality. Anyway...this is the best dremel bit I've ever used. You could burrow to the center of the Earth with this sucker. You said you used a carbide bit but not sure if it's the same one. It's a little more expensive (like $12-$15) but you can usually find it at your local Home Depot. They make other shapes of the structured tooth tungsten carbide cutters but I had to order them online.