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post #1 of 3 (permalink) Old 10-26-2010, 02:11 AM Thread Starter
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how to drill hole

this is how i drill a hole for overflow and / or auto water change
i took a piece of cedar and drilled a 1.5 inch hole in it
cut it down to size so it fit over rimless glass side
cut notch so it fit over glass, need table saw
the point of this is to drill from both sides so as to avoid chips, this way the drilled holes line up
a standard air line tubing is inserted in upper slot to cool and is gravity feed
the taped on poly allows water to flow into bucket
this is basically a jig so i can stabilize a drill bit (1.5 inch diamond hole saw drilled with cordless drill) took about 5 min though 8mm glass
i have done this on a filled aquariums also but with some water drained as to not flood lol

Last edited by willknowitall; 07-02-2012 at 04:31 AM.
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post #2 of 3 (permalink) Old 10-26-2010, 02:26 AM
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I do not use or need a jig... as it doesn't really hold it much more stable. What I use is plumbers putty, with the tank on its side and water filling the damn made by putty. This keeps it cool, which is the most important part.

In glass shops they just use a spray bottle to keep it wet.
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post #3 of 3 (permalink) Old 10-26-2010, 02:38 AM Thread Starter
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Quote:
Originally Posted by over_stocked View Post
I do not use or need a jig... as it doesn't really hold it much more stable. What I use is plumbers putty, with the tank on its side and water filling the damn made by putty. This keeps it cool, which is the most important part.

In glass shops they just use a spray bottle to keep it wet.
this way you can drill with tank in upright position and on a filled existing tank
the jig stops the the bit from skipping across glass
and it does stabilize the bit absolutely
the dam method is well know , this is a alternative
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