Have your 1kg or 1lb filament spools nicely fixed under you printer table.

Updated: BearingHolder inner hole made bigger to make sure bearing fits. use tape or paper if too loose.

HolderLeft and HolderRight are fixed to the printer table (max 22mm width) using a 4mm screw and nut. The BearingHolder should be fit with a 608ZZ Bearing. Two BearingHolders are needed to maintain a single spool. a 8mm rod passes thru all beraings and is put in the table hoders using the dedicated hole.