Springy Spool Hub for 61mm with 22mm bearing
thingiverse
UPDATE: I would make these at least 6-8mm taller in the slicer for better grip on the spool. Customized from https://www.thingiverse.com/thing:2334107. Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=2334107. This is just another 61mm remix of the original design by mmOne. The diameter was already increased about 7% to ensure a snug fit on a 61mm spool inside diameter. I'm printing these in ABS with 10% infill, coarse detail (0.4), and four of them are estimated to take less than 40 minutes! ABS should provide more flexibility than PLA.
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