About this 3D model
This is a suite of programs, working in concert, to generate GCODE from any picture. If you're using a Linux distro that uses the apt package manager you can use the setup script to automatically install the suite. Basically you attach a marker to the geared extruder and it will draw the picture. I started with a clock program that writes the time every minute, and went from there. Take a look at the github repo! https://github.com/transcendtient/Prusa-Sketcher