[youtube http://www.youtube.com/watch?v=CZ8WRDVgKrk&hl=en&fs=1&rel=0&showinfo=0&ap=%2526fmt%3D18]

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Master crafter Matthias Wandel (famous for his homebrew pipe organ) made this clever wooden combination lock to demonstrate how combination locks actually work. He has a nice write-up at his site, and is selling detailed plans if you need them. [via O’Reilly Radar]

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