I have my my X1C in closet (Ikea METOD), which is 60cm wide, but I can't insert conveniently an external spool, even sidemounted, due to the dimensional restrictions of the closet. I already had my AIO Spool Holder Remix installed, but I was too optimistic regarding the insert for the spool and the handling. And I like the simple roller designed by Shortfin3D, too.
Well, so I designed an adapter for the lefthanded-thread of codebender's spoolholder body, to insert the accompanying spindle with the stock spool cage.
Now I have a stable AND detachable spindle on a low-profile mount and can change easily external spools Voila!
The mounting holes are designed for the Ikea METOD cabinet and I used the 6mmx13mm screws, which come normally with the hinges. But you can use other suitable screws, of course, or adapt the mount in the attached STEP file.
The author remixed this model.