This is a remix of wbphelps model which uses built in X1/X1C spool mount. I had a few spool holders using HugoHuge Filler spool holder. So I remixed it to allow the spool mount to work with this. For me this works really good, the feeding is very smooth and it is totally 3d printed with no screws or nuts needed.
I mounted it to side of X1C using 3M VHB tape, it has already done many prints and has not moved or snagged. I guess command strips could work too but I have not tried those.
The author remixed this model.