To open or close, the twisting arms of the egg slide through each other while rotating. There is space inside to store a treat. Have fun!
PRINT INSTRUCTIONS:
I printed both the top and the bottom without support starting with the end of the four arms on the print bed. Since all the arms are printing independently in the beginning, the print may fail if an arm falls before they are all joined at the top. One of my prints failed this way and I tool bed adhesion more seriously with some hairspray.
The author marked this model as their own original creation.