Follow the official blog post: https://www.prusaprinters.org/?p=8875&preview=true
First 3D print enclosed files. There are no special requirements f...or the printing nor the assembling. The inner circle just click into the spool. Other circle put together and secure with screes. Just be sure you are putting together the matching segments (they are marked with 1-5 dots). Then choose any hexagonal hole, put a marker in and carefully orbit around. You can combine several ornaments just by switching the holes. https://www.dominikcisar.cz https://www.model3D.cz