Ender 5 BMG DD V6 with BLTouch

thingiverse

# **Attention** **Please choose "base_bondtech" if you're using an original Bondtech BMG! Use the "base" if you have a Trianglelabs BMG clone.** This list and guide might also have some bugs, missing steps, missing required nuts/screws etc. Feel free to contact me if I missed something. I did my best to write this together. If a few people need a mount without the big space for hiding the cables/connectors, then I can design this part again, so it will only contain a cable management way (contact me, if needed). # The Idea I was looking for a direct drive mount for my Triangle labs BMG+V6 hotend. Sadly I couldn't find any, who are good AND don't waste a lot of print volume on the Ender 5. Usually the mounts are optimized for the Ender 3, which doesn't have the frame restrictions of the Ender 5. Most mounts also introduce a PTFE tube between the BMG and the hotend, which I wanted to avoid as well. Without the fan duct you would have the same build volume then stock! # Features * Stock mounting plate * Closest Direct Drive possible (<0.5mm retraction!) * V6 Hotend * Stepper motor for direct drive * Cable management system * Fan duct for heat dissipation # Requirements Ender 5 3D printer, Bondtech BMG or Trianglelabs BMG hotend, V6 hotend, stepper motor, M3 screws, M4 screws, nuts, and a good quality filament. # Instructions 1. Remove stock hotend (keep both M3 screws holding the stock fan shroud!) 2. Prepare Base:insert nuts (2x BL Touch, 3x base, 1x M4 for 5015 fan) 3. Screw Base on the stock plate with 2x stock M3 stock screws (same position as stock plate had) and 1x M3x6 (center of the mount) 4. Insert BMG+V6 mounted together (have all 3 screws of the BMG already in there, its a "slide fit") 5. Add stepper motor and tighten the 3 screws 1. (optional) insert nut into the place for fan mount - its a really annoying and its not needed, so decide for yourself) 6. Insert nuts (2x M3) in the cover 7. Screw the cover on the base with 3x M3x30 screws 8. Check where the fan duct goes first, then do your initially cable management 9. Insert 5015 fan in the duct, secure it with M4x20 and a nut (the upper one) 10. Insert the M4x25 screw on the fan duct 11. Mount the fan duct using the M4x25 screw and the M3x8 screw, check HEIGHT, do not mount it too low or too high! 12. Add BLTouch with 2x M3x8 screws 13. Final cable managment 14. **Well done, everything should be securely in place, please check.** 15. Firmware adjustments # Firmware setup ## BL Touch offsets `#define NOZZLE_TO_PROBE_OFFSET { -39.24, -0.05, 0 }` Z offset should be around **-2.4**. Please adjust for yourself, since its depending on your nozzle/hotend. ## Limit the print volume Attention: I used sensorless homing, therefore I got different values then with endstops! **PLEASE CHECK MAX Y/X for yourself!** This is a critical step, without doing it your mount might crash into the frame!! I've adjusted the max volumes in Marlin (2.0.x) as following: ``` // The size of the print bed #define X_BED_SIZE 230 #define Y_BED_SIZE 210 ... // Travel limits (mm) after homing, corresponding to endstop positions. #define X_MAX_POS 239 // X_BED_SIZE #define Y_MAX_POS 210 // Y_BED_SIZE #define Z_MAX_POS 300 ``` For **me** this resulted in a safe print/movement, the X size should be the stock one, except on the edge due to the fanduct hitting the frame reinforcments in the edges! Again: Please check for yourself, especially if your don't use sensorless homing on X/Y.