Drilling a tank

[BCOrchidGuy]

Here are two pictures, one is the of the diamond cut off saw and the diamond bit I used along with the router attachment. Not included in the picture are safety glasses and a dust mask neither of which I would attempt glass work with out. The other picture is of the cut out. Notice all the white stuff in the tools picture? That is the dust from cutting the glass, I imagine it would make a mess of your eyes and lungs. The plexi glass on the tank is off set 1 inch and is to guide the rotary tool so the edges are nice and clean with out a wavy line. I was going to use a 3 7/8" hole saw to cut a hole in some plywood and then use the plywood (inside the hole) as a guide for the dremel to cut nice round holes for the overflow but I may have found my old source for inexpensive glass hole saws, I'll find out on Monday and post the name if it's the right place.

Doug