Side mount i printed this for can be found here, but it should work for most side mounts. https://www.printables.com/model/661283-creality-k1-side-mount-spool-adapter-with-moving-b/comments/1307196

printed in siddament ABS, any filament should work, printed with 3 walls, print the base with 4 walls and 20% gyroid infill for strength.