Curta 3:1 Print-friendly parts

thingiverse

This is just a space where I share modified parts that are more suitable for 3D printing to reduce print time, supports, and waste material. I highly recommend reviewing the other two remixes of the calculator as well; I will only add parts when I'm not satisfied with what's already available. It's still a work in progress as I add them during my own build over time. If printed parts are split, there will usually be alignment pins to help glue them back together. Rather than making you print pins too, the holes are 1.75mm diameter so you can use a bit of scrap filament for alignment. Depending on your printer accuracy, you may need to make them a little larger after printing or trim excess material. They are pinned only for alignment; the strength should come from surface area contact and glue used (so print on a smooth surface, not a textured sheet). Print settings should remain the same as the original. ### For 3D printable 5/6mm bearings: - Print at 0.1mm with 100% infill. - Give them some sanding to make layer lines smoother and they slide in and out of the dimples easily. - I suggest gluing the spring to the flat side so it doesn't rotate and jam up. - I have no idea about their longevity, but I thought they were worth a try before buying actual metal bearings. ### Changelog: - Oct 10, 2019: Added split reversing shaft with pins - Oct 12, 2019: Added some 3D-printable 5 and 6mm "bearings". - Oct 18, 2019: Added split main crank; only pin requires a support for the ridge.