Quote Originally Posted by dtfleming View Post
ON drilling glass. I have drilled several tanks, mostly for Saltwater. Keep the bit cool. plumbers putty to form a circle around the hole you want to drill, fill with water to keep the bit cool. Make sure to have some padding under the hole for when the glass pieces falls out. Keep your drill on a low torque setting and nice even drill speed. Start the hole on an angle and as it starts to make a groove, straight the drill to 90 deg angle. DO NOT push down on the drill, let the bit do the work. You can stop to make sure it is drilling fine and to add more water if need.

Look up some videos on drilling glass tanks to see what I mean.
Thanks Don. This information was just what I needed.