53.5mm Spool center
thingiverse
I designed a compact spool hub for my irregular filament reel because it doesn't align neatly, I also prefer using it without bearings but still aim to keep it spinning around its mass center.\r\nI use a 10mm rod for the holder so made it slightly larger for those who need it.\r\n\r\nTL;DR\r\naccommodates spool hub size of 53.5mm with hole diameter 12mm\r\n\r\nUpdate: Added a version with a 18mm hole for use with spool holders like the MPSM's: https://www.thingiverse.com/thing:2006457
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