Quick Change Universal Spool Holder with ribs
thingiverse
I modified the design of https://www.thingiverse.com/thing:1241566 to include eight new ribs that securely hold two 608zz bearings in place. The existing holes were enlarged to a diameter of 22.7mm, but with the addition of eight 0.3mm ribs, the actual clearance for the bearings is approximately 22.1mm. This design adjustment ensures a snug fit for the bearings on every print. On September 3rd, 2018, I added an STL file for a bolt with a standard 75mm thread length, as requested by dragsterbox.
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