Voron spool holder that i designed to use mostly with Polymaker cardboard spools. this might work for other brands, but i have yet to test as i only have Polymaker filament.

this will fit both the 1kg spools as well as their 3kg spools.

hardware required:

M5 X 0.8 - 15MM LONG BUTTON HEAD CAP SCREW = QTY REQ. X2
M5 X 0.8 - 10MM LONG BUTTON HEAD CAP SCREW = QTY REQ. X8
M5 ROLL IN T-NUT = QTY REQ. X2
608-2z FLANGED BALL BEARINGS = QTY REQ. X5

the clearance for the M5's are pretty tight and require some pressure to get the threads started, if you have an M5 tap for plastic it would be much easier.