Spool Rim/Holder for Overture cardboard spools for use with BambuLab AMS

thingiverse

The Bambu Lab AMS has a spool size requirement of 50-68mm in width and 197-202mm in diameter. The typical cardboard spools are ~66mm wide and ~200mm diameter. So most of the spool adapter designs that I've found online for cardboard spools add too much width (putting the width over the 68mm upper Bambu Lab limit) and this leads to binding in the AMS. This design is thin (only adds 1mm total in the width) and only adds 2mm in diameter. I also added some knurling on the outer surface of the rim to improve friction between the spool and the rollers within the AMS. This is another problem that I've seen with most of the spool adapter designs that I've found.