Gardening

You don't need to start with a smaller bit. If the bottom of the inverted pot won't hold water on it's own, make a small circular dam of glazing compound. A quarter to half inch of water will cool the bit and absorb vibration. You don't need to put lots of pressure on the drill, let the bit do the work. You will hear the pitch change as you get close to getting through, ease up a bit as you get close to getting all the way through.

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