Qidi Q2 Q2C spool holder and box hub bracket

Print with 3-4 perimeters for strength and use the orientation it imports in as no supports are needed. I’d recommend PETG, PCTG, or ABS since they  are more flexible than PLA or ASA and more forgiving of tight tolerances. You may need to do a slight bit of scaling to compensate for filament shrinkage.

I suggest doing a test fit of the spool holder before mounting it to the printer. If you don't like the tolerances it will be much easier to remove it before it is on the printer. I included two little slots if you need to try use a flat screwdriver as a lever to pry it out.

Reuse the 4 screws from removing the original bracket on the back of the printer. Do not overtighten them, so as to not risk stripping the back panel of the printer.
UPDATE: At least one user has noticed that his bracket used machine screws and nuts on the inside of the back panel. This means that you may have to remove the back panel to mount the new bracket. The original release of the Q2 used self-threading screws.

To use the external spool holder, you will need to disconnect the PTFE from the hub and use a coupler to extend it to the spool holder or, install a 2:1 y-junction on the output of the hub.

UPDATE (2026/01/28): A user pointed out that the screws do not reach into the printer's back panel as far as the original part. I determined that the remix that I based this off of used 4.5mm for the thickness between the screw head and the rear panel. The stock Qidi part was 2.1mm. I have adjusted my part and replaced the STL and STEP files (v2 in comment)

UPDATE (2026/03/06): I have uploaded a design that offsets the hub position lower to make room for a PTFE Y-splitter without trimming the stock PTFE tube. It does slightly increase filament change time but does ensure the bend into the printer entry point remains gentle.

https://www.printables.com/model/1627564-qidi-box-hub-offsetter