A PTFE Teflon tube is installed between the filament sensor and the extruder to prevent sudden filament tension. There are two types: PC4-M10 connection specification and tube direct connection specification. The length of the PTFE Teflon tube is approximately 40cm.
On the Extruder side,
https://www.thingiverse.com/thing:6588610
I used
Sensor Mount
https://www.thingiverse.com/thing:6236081
I used
Sensor_Holder_Direct.stl | 93.6KB | |
Sensor_Holder_PC4-M10.stl | 5.0MB |