Print this part 4x and before assembling and coiling the part, test if your parts fit together! Once they do, take it apart and coil 100g of magnet wire 24AWG onto each part.
I have more instructions on my first video called CERN: https://www.youtube.com/watch?v=QfVaCywSr18&list=PLv52A7rm-UViZEOlzZfZOB9Gl8cjS3ze5&index=11&t=66s&ab_channel=TonyFleming
Also look up the notes in description.
The only place you need support is under the coil part of the print.
Here is the video for this version: https://youtu.be/Qvo9CcLnl5Y