Does everybody put a hole underneath their piezo on DIY's to let the piezo bend as you should? or does this turn out to be too sensitive?
I was thinking of making mine out of and wooden cross with a slight hole in the middle (a fem mm deep/all the way through haven't thought about this bit yet.) which was just a few mm smaller than the piezo then glue the piezo round the edge of the hole.
What does everybody else think?