http://www.potsaa.com/pyrex-glass/

How could we drill a small hole through Pyrex glass without breaking ITOR other damage.?
I would like to learn how to drill a small hole, perhaps 2 cm wide, into a Pyrex glassware. It is very durable and high quality, ie. Chemistry Lab Equipment. Has anyone done it themselves?
I did it a few times and my Dremel (30k rpm) worked best. Make sure you tape to where you want to penetrate and score. The Band help keep the wick from sliding around. The Dremel bits are expensive but you can use a little high standard of quality instead of Dremel bits. If you have a test piece, try this first.
Microwave Plasma Melody In a Pyrex Glass