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The 3D-Printed Curta Calculator

The 3D-Printed Curta Calculator

Adam Savage’s Tested
2 HN recommenders · discussed 2017–2025
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About this video

Adam Savage shows off his collection of analog calculators, ending with a 3D-printed, scaled reproduction of the Curta mechanical calculator built by Marcus Wu. The video examines the replica and the engineering behind it.

Why it appears in the archive

Linked whenever the Curta or mechanical calculators come up, as a look at a working 3D-printed version.

AI-generated summary and labels from the source dataset; verify important details against the video. Source & credits.

From the Hacker News discussion

function_seven · 2018-10 · rec

I'm sure you've seen this already, but if not: [VIDEO] A 3:1 scale replica of the Curta, 3D printed.

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beeforpork · 2025-11 · rec

Maybe have a look at the Curta for inspiration of a mechanical calculator. There's a 3D printable version of it. [VIDEO] [LINK]

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jshprentz · 2017-12 · reference

Marcus Wu designed, 3D-printed, and assembled a 3x scale working Curta calculator. He shared his models and progress on Thingverse at [LINK] His YouTube channel includes many videos of the development, assembly, and operation of his calculator. Watch a short demonstration at [LINK] Adam Savage commissioned Marcus to build a copy. Adam unboxes his 3D-printed Curta on YouTube at [VIDEO]

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