Filament runout sensor for Ender 3 and Sapphire Pro

Filament runout sensor cover is designed in a way that filament can run through it in both directions. I wanted to have possibility to unload filament without jams in the sensor. For that purpose used endstop switch need to have rounded end as visible on one of the photos.

Originally designed to be mounted on Ender 3. Now with additional mount using that on Sapphire Pro.

STL files:

• main_generic - can be used on any printer and mounted with usage of screws that holds cover for endstop switch
• main_ender - integrated with mount designed for Ender 3 printer and mounted next to Z lead screw
• cover - holds in place endstop switch
• sapphire_mount - simple part which allow to mount sensor on Sapphire Pro. Long slots can be used to align sensor position with extruder if you use extruder dumper as I am.