Low profile magnetic filament spool holder
thingiverse
Update v2 : Made the stand using less filament and more stable filament. However, 10mm magnets are definitively not strong enough to withstand load. You will need to use a stabilizer for kilogram plus filament pools. I just print with shell = 1.6 mm (no infill, no top or bottom layers) and stuck it on the side of the arm. V1: Simple magnetic spool holder. To be used on any horizontal surface. Use other files from the MK2 model of "Prusa i3 MK2s & MK3 Spool Holder". Print 102% to ensure bearings will fit.
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