Has anyone use a glass hole saw with bit?

I have been reading about cutting glass and am wanting to cut my new 55 gallon and sump: was allready to buy on ebay, the right bit till i seen the one with the pilot bit, and was wondering if anyone has used this type? Seems like twice the chance of shatter or possibly less of a chance of shatter. Just let me know Thanks
http://cgi.ebay.com/1-1-2-inch-Diam...tem&pt=LH_DefaultDomain_0&hash=item53dfc80ac4

 

I would think it would have more of a chance of shattering. IMO.

 

You could try one of these. Then you don't need to worry about putting any torque from side to side, thats what breaks glass. And you won't need a pilot bit.

http://www.bulkreefsupply.com/store/pro ... rills.html

 

Consider drilling any glass under water as well, you should find it help with eliminating cracking.