I'm sorry, but which ones of these are complex? I'm looking through some [1] [2] [3] of the output PNGs and they look trivial. Like, my first 3d model in Blender trivial.
In comparison, here's one of my recent designs: what I would still call a very simple case [4]. And it's not like I'm a trained mechanical engineer working commercially, this is stuff I design in my spare time as a programmer.
