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"How I built a Mechanical Calculator [out of wood]" | WhatWillMakes (www.youtube.com)
submitted 4 weeks ago* (last edited 4 weeks ago) by otters_raft@lemmy.ca to c/woodworking@lemmy.ca
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Caption from the video:

How and why I built a mechanical calculator. Basing it on the Arithmometer, I built this calculator by hand out of mostly plywood. I suspect it is the first of its kind built in over 100 years. Working on and off, it took me 8 years.

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[-] MyOtherAccount@mas.to 2 points 4 weeks ago

@otters_raft @girlonthenet but… how does the ripple carry work?

[-] MyOtherAccount@mas.to 2 points 4 weeks ago

@otters_raft @girlonthenet ah.. the adding columns are slightly rotated relative to each other so they can perform the additions in sequence lowest-to-highest.

this post was submitted on 19 Nov 2025
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