Hatchbox Spool Adapter
thingiverse
Note: This takes up way more material than it needs too, new design here: https://www.thingiverse.com/thing:4500439. Spool bearing adapter half for Hatchbox filament spools (print 2) Sized for 2 1/4x5/8x.196 ball bearings per half (total of 4) OD of 2.2in matches Hatchbox dimensions, may require sanding to fit (mine measured 2.15in when I got it.
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