Ball Bearings, 22mm OD and 31.25mm OD
cults3d
The two ball bearings have a universal minimum spacing of 0.25mm between all surfaces and a height of 7mm. I recommend printing the bearings directly on the print bed, if surface adhesion allows. I printed several of these on a Creality Ender 3 Pro with a direct drive upgrade and black Hatchbox PLA. I highly recommend upgrading to a direct drive as good retraction and minimizing stringing is fairly vital for these prints. I'm also looking to expand my bearing library so please comment with any different sizes or features you'd like to see in future bearings.
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