Ender 3 V3 - Core XZ - Filament Runout Sensor Side Mount

Please read description before printing

I designed this attachment to fit on the side of the Ender 3 V3 (not compatible with SE or KE, core xz only). For my own use case, I decided to print the mount in Sunlu Grey PETG, and provided a picture of my print bed arrangement. 

This mount is designed to fit with:

-Original filament runout sensor (including the 2 factory M3 screws)

-Original PTFE connector

-Factory filament spool mounting screws

This mount requires:

-2 M3*6 screws

-2 M3*12 screws

-4 M3 4.6mm x 5.7mm brass threaded inserts

-1 meter PTFE tube (I cut mine to about 22 inches for optimal range of motion)

Installation:

1. After printing the base and PTFE riser, attach the 4 M3 heat set inserts around the top portion of the mount base. In the photos, you'll see this is around where the PTFE riser protrudes. Note: the PTFE riser requires no threaded inserts, it serves only as a spacer for alignment.
2. With the entire factory filament runout sensor mounting system removed, attach filament runout sensor to base with the original 2 M3 screws. IMPORTANT: the filament runout sensor will need to be installed backwards, with the connector facing the back side of the printer. You may need to remove the factory cable sleeve that holds the sensor cable together with the printhead cable (don't worry it removes and reinstalls easily without cutting)
3. With the factory PTFE tubing connector removed, attach the connector with the riser and 2 M3*12 screws to the mounting base. Note: for best results, install both the sensor and PTFE connector loosely, then tighten as the components align properly. 
4. Remove the 2 factory side filament holder screws, and install through the base of the printed mount. Follow this with installing the 2 M3*6 screws around the front facing portion of the mount. Once again, install loosely, then tighten towards the end for optimal alignment. 
5. With the factory PTFE tubing removed, install new PTFE tube after cutting to appropriate length. Note: I recommend cutting to a minimum length of 22 inches, or longer (I used about 22 inches of PTFE tubing and have yet to find any issues or restrained motion, filament bending, or under-extrusion)

IMPORTANT: DO NOT USE WITH THE FACTORY PTFE TUBE. Use of the short factory PTFE tubing will result in limited range of motion, as well as excessive bending of PTFE tubing and filament while homing, and during tall prints. This could lead to a variety of printing failures.  

Additional comments:

I designed this mount with the very specific intention of being used within an enclosure, and without the need for the side mounted spool, as it takes up lots of space and is visibly unappealing. With this side mounted sensor, I am now able to use my printer with a mounted filament holder, a filament dryer, and a table top filament holder, all of which would fit within the enclosure. 

The design of this side mount also reduces the possibility of the filament becoming tangled during homing, quick movements, or wide ranges of motion during printing.