
Filament Spool Hub with Print In Place Bearings
thingiverse
Holders for your spool come with typical 8mm spool holders featuring print-in-place bearings that roll smoothly.\r\n\r\nUpdate 1/23/18:\r\nIt seems the standard of spools is not as I initially thought. A new one from 3D Mars arrived and the hole was larger in size. Use the original hubs for spools up to around 54mm in diameter, while the large version fits ones up to 57mm.
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