Ender 3 Snap On Smart Filament Sensor Holder
thingiverse
Simple, easy to print, easy to install/remove Smart Filament Sensor holder that attaches to the 2 M3 screws of the lead screw nut. I'm using dual gear drive extruder, but i think i should work on standard extruder too. I've drilled a 4mm hole in the extruder arm, and used a short piece of PTFE tube to connect the sensor and extruder together for easier filament loading. The fit is quite tight so you might have to experiment with scailing the model or using horizontal expancion to get that perfect fit. I'm including step file if you need to change something.
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