I completed drilling my sump and refugium tanks with the drill bits I ordered from Lau in Hong Kong. By simply following the instructions from Just One More Tank, it was no problem at all.
This was the first time I have ever tried drilling glass. By reading this thread I was able to figure out just what size bits I would be using, and there is also a conversion link on Reff Central home page.
I would like to thank the starter of this thread( Just One More Tank) for taking the time to post such graphic detailed instructions.
Thanks and read on.
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