Ender 3 runout sensor
thingiverse
This is a mix from two different designs one bracket to help the filament to enter smooth in the extruder and a runout filament sensor, as both of them share the mount system, I joined both and updated the ring to use a 688z bearing https://www.thingiverse.com/thing:3850237 https://www.thingiverse.com/thing:3052488
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