I have a Creality CR-10v2, though this project should also fit the X gantry plate for the CR-10v3. I purchased a genuine E3D V6 and wanted to mount it to my CR-10v2. I really like the simple, compact design by 3D_Fabrication_Lab that this remix is based upon. It is very professional. Unfortunately, while he includes a version which fits the E3D V6, it seems that there was a slight design revision in E3D's heat sink in 2022 which means that his model does not fit.

I took the opportunity to make some changes:

1. Now fits the E3D V6 heat sink as it is being sold in 2024. The Z height of the nozzle should match the original Creality factory mount.
2. I opened up the space between the X gantry plate and the mount a little to allow for E3D's Molex thermistor connector to fit.
3. The hole for the heat sink fan is now a little larger with a smaller corner radius to fit a Noctua fan.

EDIT 2024-03-07:
At first I was quite happy with the modified hotend and the existing fan duct design, but I was printing ASA and ASA Carbon Fiber filament, which uses very low cooling. I wanted to bump the temperature above 250 C, and realized that the cooling fan blows not just across the heatsink, but a significant airflow hits the top of the heater block and prevents reaching higher temperatures.To remedy this, I changed the design of the front and rear mounts so that the cooling tunnel is now straight through and very little air can escape downward. Now I have no trouble reaching higher temperatures.

I also tried to print PLA and it went horribly. My new all-metal hotend was already going to make PLA more challenging since it limits retraction, but the existing fan vent made things even worse. There was simply no combination of settings that I could use which didn't result in either horrible stringing or a total failure to print overhangs and bridges. The fan duct nozzles were simply blowing to much undirected air everywhere. I went through a few iterations and settled on something more similar to the factory fan duct, with just two highly-directed outlets. The outlets are still not quite as close to the heater block as the factory outlets were. Nevertheless, I now can produce satisfactory PLA parts using a fan speed of around 40%, and this also successfully prints a temperature tower as well as a retraction tower with a wide range of acceptable retraction distances (~2.0-5.0). I've settled on 2.5mm for retraction with a speed of 100mm/s.