Very effective, I have adopted it for my personal use (see photo).
Original creation: https://www.thingiverse.com/thing:3122067
Uses ABEC 9 ball bearings, available on amazon for about ten euros.
If possible, attach one of the two bases to the table with 2 screws, the other one remaining free to adjust to the different coil widths.
No particular printing problems
Base.stl is to be printed twice.
The 2 axes are printed vertically, the raft I added is to be removed at the end.
Layer used=0.20 mm
No Skirt, no Brim, no Raft
Page translated by automatic translation. Suggest a better translation