Instead of using threads to fasten the egg together, this model uses magnets! This makes it easier to align the colors of the top and bottom when using multi-color filaments and is so satisfying to open and close!
It's recommended that your printer be well tuned to ensure pieces fit comfortably. Tolerances are set to 0.3mm. This puts the fitment somewhere between snug and loose in order to accommodate the wide variety of printers out there and their tuned states.
If you happen to have clearance issues, you can always scale the model up in order to loosen up the tolerances necessary for pieces to fit together properly.
Print Instructions: Optional Hardware: 6 - 6x3mm magnets for the egg
Supports: Not required. However, if you want the inside of the egg to look neat toward the top you might consider adding support there if you'd like.
Assembly: When placing the magnets, ensure the magnets placed in a way where they attract each other when the tray is attached to the pot.
I've designed the magnets to be a “loose” press fit. Due to the wide variety of printers out there and the various states of tune the printers are in, I didn't want to make the tolerance too tight and make it difficult for those who haven't tuned their printers well enough. So, if your printer is well tuned, you may need to use glue to fasten the magnets.
Happy printing!