[Noah930]

I recently installed some fixtures in my bathroom, and drilled through various ceramic tiles. I was always told to go slowly, to avoid heating up the tip of the drill bit too much, and to apply a constant stream of water/oil to cool off the tip. What a waste of time, that advice. You'll be drilling for years.

I finally googled "drilling through ceramic tile." There are a couple videos out there. I bought a couple masonry bits. Pretty much drill slowly for a few (3 or 4) short bursts to break the glaze on the tile surface. Masking tape on the drill site helps keep the bit from walking initially. And then drill away with wild abandon (and ignore all the admonitions to go slowly). Done in about 15 seconds.