I 3D printed some Zuse-style mechanical NAND gates last year, that was a lot of fun and makes for a great fidget toy: https://mero.ng/i/vMdqQYJG.jpg https://me

I 3D printed some Zuse-style mechanical NAND gates last year, that was a lot of fun and makes for a great fidget toy: https://mero.ng/i/vMdqQYJG.jpg https://mero.ng/i/vMdqQYJG.jpg I've kind of given some thought of doing a higher-quality metal production run of these with nice finish and engravings of the inputs and outputs as a geeky desk fidget. Model credit goes here (and of course to the original Zuse patent application the design is from), although I made a NAND remix as I wanted a universal gate and fixed up all of the tolerances and still really have to upload my version: https://www.printables.com/model/69642-zuse-inspired-z1-logic-gate-demonstration-set-impr https://www.printables.com/model/69642-zuse-inspired-z1-logi...