I assembled my MK4S kit in October 2024. Then I started designing with Openscad. Openscad is a poweful software and Scad is a horrible language with many drawbacks. So I wrote some Python scripts, that create Scad Polyhedrons wherever I want them with very view commands. One script turned out highly valuable. It creates the polyhedrons for outer and inner threads. And it allows me to automatically create hundreds of screw models in a single run. This may take a day or two, if no error occurs. 😉