This is a simple, one piece, minimalistic, and high performance Fan duct for Neptune 2/2s or printers with same x-gantry plate. It is highly inspired by ammaryasir's remix of Satsana fan duct and remixed from Ender 3 | Dual 5015 Fan Duct as there's nothing similar for Neptune series. It is also compatible with Direct Drivinator (3D Printed Direct Drive, care for Neptune 2s as it has different offset, visible on result photos at the end).
Feel free to adapt model and change as you with
Added BLTouch support models left, supports 3D touch from Triangle lab
Offsets and dimensions:
To print this put it on it's flat side (back), 0.20mm layer high is good enough and don't take too long, for infill use 30% or higher. If your printer have really bad bridging performance use supports, build plate only and 85 overhang. In my case it took 7h24m and took 98g of PETG filament
To Install this fan duct you only need 2 M3 screws that are already holding the original fan shroud and for the hotend (4010) fan you can use original screws too but for 5015 fans you either don't use screws at all (the fans are perfect fit so they are holding them selfs) or 25x4M screw.
You should be done at this point and you can peacefully enjoy this Fan Duct!
Use holes for easier assemble of M3 screws with hex tool
For the right hole use tweezers to hold screw in place
The author remixed this model.
Elegoo Neptune 2s support with or w/o BLTouch and 5015 fans