5 model

Free

Filament Sensor - MakerBot Endstop Runout Switch 1.75mm

Thingiverse

Free

Filament sensor with Ender endstop

Thingiverse

Free

Filament sensor with Z endstop - Ender3

Thingiverse

Free

Filament Progression and Runout sensor (Optical Endstop and Encoder Wheel)

Thingiverse

Free

Prusa i3 X-Carriage with X-endstop mount and filament chiller

Thingiverse