Creality CR-6 SE Stealthburner LGX Lite

Introduction

I have no idea whether this was a good idea or not, but I've done it now, so I'm making it available for others.

It's your printer, you are responsible for any modifications you may choose to make to it.

Design Notes

I designed this for my particular printer, which is running stock hotend and stock motherboard, but flashed with Klipper and using a Bondtech LGX Lite extruder.

This design may work with other CR6-SE compatible hotends with similar dimensions, but I haven’t tested, so YMMV.

I designed this to enable direct drive using LGX Lite extruder in a Voron Stealthburner form factor; however, if you don’t have an LGX Lite extruder, you should be able to use this design with a Bowden tube setup if you so wish. However, I haven’t tested, so YMMV.

This model is specifically designed to be compatible with the original, unmodified Stealthburner front-body part, so that other front body remixes should be compatible, but this is untested, so YMMV.

This model retains the use of the original strain gauge for ABL and virtual Z endstop.

I was originally planning to mount the daughter board PCB on the back of the toolhead, but there isn't enough clearance to allow the X axis to hit its extents without crashing into the frame, so I’ve ended up with a “remote daughter board” style design, which necessitates cable extensions.

In order to make everything fit and retain the unmodified Stealthburner front-body, I had to raise everything up to avoid the extruder motor colliding with the carriage, this means the strain gauge (and therefore nozzle) is now ~10mm higher compared to the original CR-6 SE.

To accomplish this, I leveraged one of the original mounting holes, but the other side is now fixed into a heat insert on my new mounting plate.

By moving the strain gauge up, the nozzle has also moved relative to the original CR-6 SE. This has implications for the Z-axis optical sensor. I didn’t feel like I could shorten the moving tab, because it looked dangerously close to the sensor, so I designed a part to offset the actual sensor, but this also requires moving it forward, so we also need to bring the tab forward as well.

Printing

I printed all parts in PETG.

I printed everything with 20% infill.

No supports necessary.

The optical sensor parts could be printed in PLA.

Files

I’ve uploaded separate STL files for each part.

I’ve also included the STEP CAD file.

I've included the Voron Stealthburner front body STL for convenience, but this is unmodified from the original. Credit belongs to the Voron design team.

Assembly & Installation

I’ve uploaded a separate installation guide with step-by-step instructions and pictures.

I highly recommend you read this document, because it contains critical information.

Credits

Voron Design Stealthburner

https://github.com/VoronDesign/Voron-Stealthburner

LGX Lite Stealthburner

https://github.com/Eytecz/LGX_Lite_Stealthburner_CW2_style_mount

CR-6 SE Hotend Assembly from GrabCad

https://grabcad.com/library/cr6-se-hotend-assy-1