Get a few extra bottles just in case... Do not drill until at least 24
hours have passed since you drank the wine...
Seriously, there is a bit made for this, it is roughly spear-point in
shape and I belive made of carbide. It works best in a drill press at
slow speed but can be used in a hand held drill. If you can keep the
glass wet (with water) while drilling it supposedly helps. I've often
seen the advice to make a "dam" around the hole using modeling clay or
something like that, and filling it with water, but I've done OK just
using a spray bottle and taking my time.
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