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Unread 11/16/2005, 08:33 PM   #70
Superorb
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Join Date: Jun 2005
Location: Denver, CO
Posts: 430
FWIW, a glass cutting company published that you should not exceed something like 200RPMs when drilling glass with a diamond hole saw. i can't recall why, but that's what i did. very slowly and hardly any pressure. i was too affraid of cracking my new 55g tank. 3 holes went nice just that the hole saws werent 100% true. they wobbled a bit. i even bought a new drill of a different brand and corded, and it still wobbled. oh well.


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