Ender 3 Filament Guide for 688 bearing
thingiverse
Remix of D3D Designs Ender 3 filament guide, modified to utilize a 688 ball bearing since that's what I had on hand. Just print all D3D Designs files, including those provided, but instead of printing two pulley halves, print one and the other (the snap-together design fills the space from 608 to 688).
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