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Woodworker Matt Wandel has a tool on his site for designing your own “low precision” gears (i.e. wood, phenolic plastic, etc) and printing them out onto paper templates for cutting. You can define two gears (with tooth size, count, angle) and watch them interact. The site also includes a brief... Read more »

Matthias Wandel has the coolest project ever, a binary marble computer - It had occurred to me that perhaps with an insane amount of perseverance, it might be possible to build a whole computer that runs on marbles. My second marble machine was however much less based on logic –... Read more »


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