Neofil3D Snap-on Legacy Spool Adapter

6 grams, 13 minutes, just an optimized adapter, no gimmicks

Neofil3D used to have awful spool notches, combined with the narrow spool width: they will often catch on the guides inside the AMS
if you have old Neofil3D spools laying around, these will help you get use them

this ring will just snap on the spool with tension 
it can be easily removed and reused without damaging it
only 8 minutes print (13 if you let your Bambu Printer do all its dance.)
6 grams only
can be printed in “sport” mode just fine
 

you can either use a filament clip, or simply slide the filament through the original notches (see picture)