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|  Drilling Glass With a Dremel So here's the scenario; I have a 20 long that I want to set up as a water change tank. My plan is to drill a 1/2" hole through the glass and install a float valve in the tank. I am going to tee into the line to my top off reservoir so my RO/DI feeds water to the W/C tank. I just figured in the arsenal of attachments in the Dremel kit (90% of which I never use) there should be something there that could poke a 1/2" hole in glass. Anyone ever tried this? Which bit works best? | 
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|   Diamond coated bits,t hey do drill holes dremel just meant them to be used to engrave and ech glass. I have numerous different bits, but i found the ones that have a pointed tip work the best, just spray water and let the bit do the work (not too much pressure) and use the bit at a 45 degree angle, until you break throught the glass then you can use a different bit and work the bit vertical . I've drilled numerous holes with my dremel this way. 
				__________________ My 265 gallon build! | 
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|   You guys have a lot more nerve than I do, a 20" tank is lucky 3mm.  Even with a diamond hole saw I am nervous doing it. Ken | 
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|   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. | 
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|   You can make a small dam out of plumbers putty to help keep the bit cooled and lubricated with water. | 
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|   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. 
				__________________ Desperately seeking serenity ... 180g custom build http://www.canreef.com/vbulletin/showthread.php?t=81400 50g custom daycare tank... http://www.canreef.com/vbulletin/showthread.php?t=65428 | 
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				__________________ Desperately seeking serenity ... 180g custom build http://www.canreef.com/vbulletin/showthread.php?t=81400 50g custom daycare tank... http://www.canreef.com/vbulletin/showthread.php?t=65428 Last edited by lockrookie; 06-04-2010 at 07:15 AM. |