The idler arm, just wasn't long enough to reach the IR sensor.
So I made the arm 0.5mm longer, and that was enough.
Rafts:
No
Supports:
No
Resolution:
0.20
Infill:
20%
Filament brand:
123-3D.nl
Filament color:
Black
Filament material:
PETG
The author remixed this model.