Bondtech BMG Filament Runout Sensor Adapter

thingiverse

This is an adapter that lets you use Chris Riley's outstanding Filament Sensor with a Bondtech BMG extruder. Since you're working with a Bowden System, this mounts where the E3D collar goes. Check out Chris' original post to see how he set up the sensor and other necessary parts for it to work seamlessly. I've been using his setup on my Artemis 3D printer for many months now, and it performs flawlessly every time.