X Axis Pulley Cover for Ender 3 S1

Needed a place to mount filament runout sensor when I removed my spool holder. 

This cover gives you a place to install the Creality Filament sensor on the x gantry and uses a bowden tube between sensor and extruder. Also has provision for stock x end stop switch.

Remove mounting plate from back of sensor and reuse screws for mounting. Screws and tube fittings will thread directly into plastic, no threaded inserts required. You will need to reroute wires for sensor.