Ender 3 SIMPLE! spool sleeve (reel spindle)
thingiverse
This is an incredibly easy reel sleeve for the Ender 3. I discovered that the reel didn't spin smoothly, so I designed this sleeve to fit over the reel spindle. It features some straightforward internal ridges that reduce friction and allow the reel to turn more effortlessly. It performs best when paired with a filament guide. I'm confident that more sophisticated reel upgrades might work even better, but I aimed for something uncomplicated, fast, and effective - without requiring any extra parts like bearings.
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