My guess is the Dremel will not cut glass, but that thin glass will=20 shatter, at least locally. I think you could cut the metal base though=20 with the Dremel, however, the glass does occupy most of the metal base.=20 The tube does have a glass sealed end with the electrodes (wires)=20 embedded in the glass tube end, and then the wire ends soldered to the=20 contacts. And be sure to work outside with the wind carrying the mercury=20 vapors away from you. Might be able to score the tube perimeter with a=20 glass cutter, and just a sharp tap will break it neatly. Maybe someone=20 with glass blowing experience can refine this thought. On 7/25/2011 8:31 PM, John Coppens wrote: > On Mon, 25 Jul 2011 18:07:11 -0400 > Adam Field wrote: > > =20 >> Careful to not do too many of those, there is an small (insignificant) >> amount of mercury in every tube, mixed in the calcium phosphate >> powder. >> =20 > Thanks, Adam... Yes, I did know that, and I never touched the actual > stuff. I fact, I was surprised how clean I could perforate and then cut > the glass with the disk of a Dremel. > > John > =20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .