Simplified Ender 3 Hotend & 5015 Partcooling Duct replacement by raeuberhose

Last crawled date: 3 years, 1 month ago

Hello,
this is my rather simplified hotend and partcooling duct replacement for the Ender 3 (Pro).
After my stock partcooling fan died, I upgraded to a 5015-style blower fan. Beeing not fully satisfied with the selection of 5015-ducts, I started created my own.
Materials needed:
one paperclip, for securing the pins
one screw in case you are using BLTouch (feel free to change the diameter of the bore in the attached .f3d-file to use the screw you have laying around)
To install the hotend duct, you have to unscrew the hotend. Remove the screws, put the duct over the now loose bowden tube/hotend and slide it down until you can insert the screws into the front of the hotend. Be careful not to break the duct when pushing it over the bowden.
Place the duct between the carrier and the hotend and tighten the screws.
Once finished you can install the axial fan on the hotend duct.
Next, install the "Fan_mount" which carries the 5015 fan. You can use the original fan Ender 3 screws.
The holes are elongated so you can adjust the hight of the partcooling duct to your buildplate.
The next step is to clip the partcooling duct on the 5015 fan, before installing it on the mounting arm.
Place the fan with the duct from underneath the hotend into its bracket. Use the long pin and push it from the left side into the top mounting holes and the fan.
The short pin keeps the fan at the bottom in place, feel free to secure the pins with a cut paperclip.
Adjust height if necessary.
I added some pictures from my "water testing" of the partcooling duct at 30% and 100% fan speed.
There are two hotend versions available, one with BLTouch and one without. If you are using a BLTouch, you also have to print the "BLTouch_mount". The probe offset is: X=+30; Y-17.
If you encounter any issues, or have improvements, let me know!
Cheers.