Hatchbox Spool Adapter
thingiverse
Note: This design is a significant improvement over the original, consuming less material than necessary. Check out this new design here: https://www.thingiverse.com/thing:4500439. Spool Bearing Adapter Half for Hatchbox Filament Spools (Print 2) Designed to accommodate two 2 1/4x5/8x0.196 ball bearings per half, totaling four in all. The Outside Diameter of 2.2 inches aligns perfectly with Hatchbox dimensions, but may require sanding to ensure a snug fit.
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