Binary Adding Machine

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- Zombie Cat

Here's a teaching tool.  It's a binary marble adding machine.  Its based on the plans from the site:  It's a great way of teaching binary numbers and it is also a lot of fun to watch the marbles fall!

This is designed to be laser cut in 5mm (1/4" nominal) plywood and then all glued 3 thick for the bars, and the rocker mechanisms.