FlashForge Creator 3 Pro Fan Duct

I noticed that the factory fan duct for the part cooling fan is open end-to-end, which causes around 50% of the airflow to be unfocused and not directed near the nozzle. Additionally, the stock duct design is identical for both the left and right extruders, even though the nozzle positions are mirrored—leading to inefficient cooling performance.

To address this, I designed two new ducts (one for each extruder) with the following improvements:

- Redirects airflow more precisely toward the nozzle:
- The left extruder (as printer viewed from the front) has the nozzle positioned to the right, so the left duct steers air to the right.
- The right extruder has the nozzle positioned to the left, so the right duct steers air to the left.
- Closes the open gap around the screw head to eliminate airflow loss and improve directional focus.

In the attached photo, the original black duct is shown in the center, with the redesigned left and right grey ducts on either side.
Note: This photo sh