Prusa I3 MK3S – print your own parts! flyingsquirrel October 20, 2019 March 7, 2022 No Comments on Prusa I3 MK3S – print your own parts! I splurged and bought a Prusa I3 MK3S 3D printer kit! After a day of assembling, it was ready to use. Absolutely awesome – combined with Sketchup or Blender, you can build your own models, or just visit Thingiverse and print out stuff.