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Comment: What's that power supply? looks serious.
Comment: Best video ever, Now I have to buy big rare earf magnets
Comment: Instead of "about 35 degrees", try 31.6!
Comment: Thanks for an awesome Instructable! I highly recommend these cgi.ebay.com.au/PIEZO-BUZZ…
Comment: Spunky lookin instrument. Hows about some audio/video? (please!)