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To complement his ReMaking History column in MAKE Volume 29, Bill Gurstelle shows you how to make a tuning fork with some simple tools and a strip of aluminum.

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Becky Stern

Becky Stern is head of wearable electronics at Adafruit Industries. Her personal site:



  1. That is really awesome!

    If we’re being really band-geeky here (and I am, because I’m a classically-trained musician!) A440 is only the pitch most of us in the western world tune to. As I’ve found to my own peril (I used to play the oboe professionally), some countries in Europe don’t use A440 as the tuning standard.

    In fact, some orchestras in the U.S. don’t use A440, and use A420 instead!