Thinking a bit more about this, if you use a 120 volt dremel I would submerse the building in a plastic bucket of water and wear rubber gloves to minimize shock hazard or use a battery powered drill. Safer than using it in a sink under running water.
That sounds crazy Pete. I don’t think I would do that. Thinking back on it, I may have used oil, not water as the lubricant. May have also used a punch to very lightly score the tile and keep the drill from walking. It's been quite few years. Recommend Enon49 watch a few videos on drilling a hole in ceramic tile.
Recomendations are based on grinding and drilling glass. If you need a centerpunch use a carbide scribe and scratch a hole. Using a punch or any impact tool you risk shattering the building.
But it's ceramic, not glass. Once you get through the surface, the going is easy. And yes, there is a risk using the punch, you need to be light on the hammer as I recall.
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