Qidi X-Max (X-Plus) Internal Spool Holder

thingiverse

UPDATED 25 March 2022: Added a Z-Seam groove. (Many thanks to Kevin Pereira) This is a bit of a Rube Goldberg solution (https://www.vernier.com/experiment/pep-16_rube-goldberg-machine/). After seeing other solutions ranging from using ball bearing to copies of the OEM part, I thought I might be able to design something in the middle. It is essentially a large print-in-place bearing. The assembly consists of a base, spool, cap and key. **The base and spool must be printed together.** The spool will be trapped on the base by the bearing race rings. There is a small pin on the bottom of the spool to position it relative to the base. The internal limitations of the printer enclosure requires that the spool holder be inserted into the filament spool before the spool holder is screwed into the back of the enclosure, so the cap is screwed on to the spool holder with the spool in place before the assembly is screwed into the enclosure. The key is a friction fit into the base and provides a means of turning the base mounting screw. Required Hardware: one M10-1.5, 25mm Hex Head bolt. 25mm is long enough to allow for positioning the bolt into the threaded mount inside the enclosure.