Ender 3 Extruder Frame Mounted Filament Roller Bearing and Runout Sensor
thingiverse
This bearing and runout sensor is intended for direct drive setups where the extruder motor is removed from the mounting bracket leaving a plate with a hole in it. A Bowden tube pneumatic fitting is attached to the end of the roller guide/sensor, and the Bowden tube is connected between the roller guide/sensor and top of direct drive extruder. This uses a KW12-3 Roller Lever Arm Limit Switch as the runout sensor, and a 608 bearing. Print the roller guide/sensor using standard support, and print 2 bearing spacers
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