This is the world's first 3D printable typewriter capable of creating a real office document! Known as an "index" typewriter, a stylus is pointed at a legend to orient the type element, which strikes the paper with the press of a lever.
This is a reverse engineering of the AEG Mignon typewriter, a German design sold through the early 1930s. All parts have been optimized for 3D printing, avoiding support structures almost entirely, and with an absolute minimum of non printed parts. All parts assemble via snap fits and 3D printed threads. The result of months of work and much iteration, there are over 130 geometries and the final typewriter has over 200 parts. I created full assembly documentation for other hobbyists who build this.
This was featured on Thingiverse, Hackaday, and the 3D Printing Today podcast. Check out my long form interview with typewriter enthusiast Richard Polt: https://writingball.blogspot.com/2026/01/interview-with-keenan-finucan-creator.html
