So starting from jnorre's model, I thought I adapt it a bit to my needs, experiment with some print-in-place rollers and add a variant with a filament guide structure for an insert for a filament guide I had lying around from an old 3d printer. Also added a thread to the holder and a threaded key to lock in the spool. This is made to support spools from Purefil from Fabru GmbH.
Filament: Purefil BioTEC Jet Black
OnShape: https://dub.wfirbolg.ch/spool
Used @TheReverseEng_260391 M10 Hose Connector just for aesthetics https://dub.wfirbolg.ch/PC4-M10
Requires spacer to keep using the runout sensor: https://dub.wfirbolg.ch/spacer2
The author remixed this model.
I really like jnorre's model but I've been having issues with the filament getting caught between the spool and the spool holder and breaking off the filament mid print.