The original design filament holder was too small for the food containers I have. I therefore redrew it in Fusion to fit my 4L food containers (https://amzn.eu/d/iivlmhY) and added a hole for a humidity sensor (https://amzn.eu/d/hCdHELs) plus a hole at the other end for a 4mm push fit connector (https://amzn.eu/d/bwMo1Bf). It works with the original filament roll axle from this design: https://wiki.bambulab.com/en/filament-acc/acc/sealed-box