So I was on the hunt for a long time for a Fan Duct for my Ender 3 Pro that would work with a dual 4020 fans setup, in order to install some silent fans. I did not find anything that I would like and would look nice.
I then designed this fan duct, grabbing ideas from several models and getting a thing on my own.
MAIN FEATURES
- Cabling paths so all cables are organized and hidden
- Dual 4020 Fans, including fixings for hotend fan
- Sleek design
- Support for BL-Touch/CR-Touch
- Improved airflow to reduce air noise
I may also prepare a top cover to cover CR-Touch/BL-Touch cable and secure the bowden tube. Still have to think about it.
PRINT SETTINGS
- Nozzle: 0.4 or 0.6 (I printed with 0.6)
- Layer Height: 0.20 or 0.3
- Infill: 20% to 30%
- Supports: YES (I recommend using tree-supports with touching buildplate only. Be careful to adjust settings so supports do not grow into the duct)
- Perimeters: 3 or 4 (dependent on nozzle)
- Material: PLA+/PETG
Side notes:
- You may also want to add a brim to avoid issues with possible collisions on the initial stages of the print.
- If you have issues slicing on Cura 5.6.0, just rotate the model by 90 degrees.
ASSEMBLY
REALLY IMPORTANT: You should fit the fan duct as any other, with the only difference being that the top-right screw shall be fitted from the back of the support plate.
You will need:
- 2x M3x8mm screws - to fix the duct into the support plate
- 4x M3x25mm screws - for 4020 front fan
- 2x M3x8mm or M3x12mm - for BL-Touch/CR-Touch mounting
- 2x M3 Nuts - for BL-Touch/CR-Touch mounting. The space for these is very tight, so you may need a pliers to fit them with some pressure.
OFFSET SETTINGS FOR CR-TOUCH
Hope you enjoy it.
VaReTaS
