I made this filament guide with break detection module for the Ender 3.
The part is mounted on the Z-axis without the need for fixing screws. For the wheel and sensor module, use M3 screws with flat washers. The filament guide can be used without the sensor.
Approximate size: 52.0 x 52.0 x 45.0 mm.
You can use the following settings, printed on Ender 3:
Material: PLA+, PETG, o similar.
Layer height: 0.2
line width (nozzle): 0.4
Wall line count: 3
Top layers: 4
Lower layers: 4
Filling density: > 25%.
Filling pattern: Grid
Supports: No
Recommendation: Print at the position of the last image