Drilling Glass With a Dremel

[Kenzy]

I did the same thing when I turned a 20g into a sump. I laid the tank on its back and added just enough water to wet the area I was going to drill the hole. I used the round diamond bit and just went slow. It still only took about 10 minutes to do it.

[Gary]

You can make a small dam out of plumbers putty to help keep the bit cooled and lubricated with water.

[lockrookie]

not to jump your thread but im thinking of trying to notch a 50g tank for external overflow with a dremel not sure if it will work or not i may just try and cut it then add a black plastic piece notched. just a little scared ill destory the tank but you only live once right.

[lockrookie]

i think i have my answer im going to try this

http://www.reefcentral.com/forums/sh...d.php?t=444094