Comment by m4rtink

BTW, if you want to design some models for 3D printing but the only thing you know to do is to code, you can use OpenSCAD & program the obejcrs into existence:

https://openscad.org/

Also recommend using the BOSL2 library with OpenSCAD - it turnes an already very powerful tool into something insane:

https://github.com/BelfrySCAD/BOSL2