The spool is from Woofy: https://www.youmagine.com/designs/spool-holder-for-loose-filament The alternative hub from didierkl: https://www.youmagine.com/designs/alternative-hub-for-loose-filament-spool The low friction spool holder is from IRobertl: https://www.youmagine.com/designs/low-friction-um2-spoolholder