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tank Drilling?

redfishbluefish

Officer Emeritus
Officer Emeritus
This isn’t a “how to” thread, but here’s the thread of us drilling two holes in half inch glass. The trick is to go slow, no pressure on the drill…use water to keep it cool. You could also go to www.glass-holes.com and check out their videos. The holes we drilled were for a glass holes overflow.

And here's the most important thing...it can't be tempered glass. If you try to drill tempered glass, it will shatter into a million pieces.

About halfway down the page:

http://www.njreefers.org/joomla/index.php?option=com_smf&Itemid=26&topic=15806.0
 
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