EDIT: There is now a v2 with better threads as some users had trouble with threads binding on v1.
IMPORTANT: Print in the same orientation as the model is displayed in picture 1. Like any other small print, don't print too fast as the layers wont have time to cool down before the next one. It is even more important on a model that has threads.
Fun easter egg with threads to hold one kinder egg. No need for supports.
You might have to screw and unscrew it a couple of times to get the threads running smooth.