Improved version of the wand core. Small operation so that the screw part and the core itself are printed in one part. This is to prevent the screw thread from breaking.
My advice here is to print it with 100% line fill. Preferably diagonally so that the lines span the entire core.

Best to print it some mm above the build plate.

Good Result with petg

Anet

A8

Doesn't Matter

Yes

0.4

100%