I (mostly) fixed my mechanical calculator! Here it is calculating 12 x 42. The 8th place from the right increments by 5 with each turn so I still need to take it apart and fix that but otherwise it is working well.

I used this calculator to tally up Scrabble scores this weekend and was pretty happy with how it performed. There is a special kind of satisfaction when winding the crank for each sum.

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@kyle that’s pretty cool. Definitely need to start making hand mined bitcoin now.

@kyle Must also ensure there are no hidden mechanical functions recording forbidden button presses and lever pulls to be recovered by "Big Adding Machine" later.

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