Woodworking Workshop
How Mechanical Counters Work

Matthias Wandel, who makes wonderful wooden mechanisms, demonstrates his wooden 3-digit mechanical counter. It’s a terrific way to learn how these common devices work. He has build plans at his website.

Mathhias wrote a Marble Adding Machine how-to for MAKE.

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Mark Frauenfelder is the founding Editor-in-Chief of Make: magazine, and the founder of the popular Boing Boing blog.

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