This is a remix of the original Hero Me Fan Duct from "kelokera" and the re-remix from "mediaman"
In this version you use only stock Ender 3 parts (fans and mounting hardware) for installation. No need for extra parts. (The mediaman parts need M3 screws that collide with the parts cooler fan)
Tested on Ender 3 (2019).
Basically I replaced the base holes from mediaman with the smaller threaded holes from kelokera. I also reinforced the part that slides over the plate because it broke off on my first test.
Also the part cooler from mediaman was slightly modified because my OEM part cooler fan did not fit into it (Different frame, compare with my picture). Old and new style should fit now. Additionally also added the threaded holes for the OEM screws.
The base lock plate is unmodified from mediaman's pack.
-Uninstall original shroud
-Slide printed base from top over hotend. Use printed base lock and two original screws to secure to plate.
Screw original hotend fan with 4 original fan screws onto base.
-Slide printed part cooler duct underside onto base. Use the two SHORTER original screws of the part cooler fan to secure part cooler duct on base.
Insert original part cooler and secure with the two LONGER part cooler fan screws to duct.
Print as oriented in STLs with supports