BMG-X2 Chimera Creality Ender 5 Extruder Mount

thingiverse

This is an all-inclusive mount for the Bondtech BMG-X2 dual direct drive extruder on a Creality Ender 5 that fits the BMG-X2 model designed specifically for the 18 mm c-c version of the E3D Chimera hotend, including the TH3D Tough clone. It may also fit the 20 mm version. This project is still in development, with some minor tweaks needed to improve assembly ease, robustness, and height adjustments. I've printed these files, installed them on my Ender 5, and everything works perfectly as intended. The mount clips over the top of the x-axis carriage plate and bolts to the carriage in three places using M3 hardware. After that, you can install the extruder and stepper motors, then add the fan ducts, supports, and BLTouch mount. The ducts were tricky to package without increasing the footprint of the already large BMG-X2 extruder. The ducts are roughly constant-area from the fan inlet down to where it narrows towards the nozzle. There are internal flow straighteners designed to improve airflow and support prints while bridging. Some trimming may be necessary to the notch at the fan inlet depending on your 5015 design. Keep in mind that you'll need to replace your stock x-axis belt, as the metal crimp-ends will interfere with the back of the mount. I've included a link to the belt lock clamp I used to allow the required clearance. The design uses dual 5015 cooling fans for part cooling and a standard 30mm fan for the hotend. It also includes a mount for a BLTouch. I've added a bowden tube slicing fixture that cuts the bowden tube to 38.2mm, which is the length I measured as correct for mating between the all-metal hotend and the outlet of the extruders.