This spool holder is meant for a tight space and better feeding of the spool through the enclosure wall. The brackets attach directly to the rails of the enclosure. The brackets are attached using M4 screws and a nut, The nut I used had to be ground down on a belt sander first so it could fit in the small gap. 


This was printed on the Snapmaker A350 2.0
Using 2.5mm layer height, 15% gyroid infill, no support, 70mm/s print speed, printed on its side. The spool shaft was done with the same settings but printed vertically. (Also the shaft can be literally anything cylindrical does not have to be this model)