This Thread Spool is designed for simplier printing. There is no need for support and you just can rotate hat from body like bolt from nut and thats it.

Original reason was to make spool where you can respool threads from bigger spool to smaller and then you can use smaller spool in another machine like overlocker. So you can save money in this print too.

Its recommend to prit threaded parts from print using adaptive layers (0.08mm) because its easier to install part wich have good thread.