3D Printed Curta Part VIII

wudev.digitaltorque.com

5 pointswglb2 comments

For those wondering what this is a part for: the Curta is the ultimate mechanical calculator (https://en.wikipedia.org/wiki/Curta)

Apparently, someone is trying to 3D print one. I find that ambitious; the tolerances of the parts will have to be tiny, and operating it will exert fairly large forces to the parts.

I am the owner of the blog and the creator of that 3D printed Curta. The tolerances are small -- too small for the printer actually, but I am printing them so they will allow hand fitting the parts that require a specific mechanical fit.

The forces aren't too bad unless parts are misaligned which has happened, but the easy solution is to stop turning it when it jams up. When parts are aligned well and lubricated, everything runs very well -- misalignment was my fault for overlooking a few things.

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