This is a partial remix of OBA
@OBA_97489's EXCELLENT Sunlu spool adapter. I reduced the inner diameter to 45mm and added a replacement spool holder that has an Anycubic style “twist-on” mount for a snug but free fit. To keep the spool from falling off, I added an “end cap” that just pops into place.
Sliced in Orca Slicer and printed on my FlashForge AD5M.
I used a .6mm nozzle and a .3mm layer height.
No supports
10% infill
The author remixed this model.
Reduced Center Diameter to 45mm.
Added spool holder
Added end cap