This is a minimal dual fan duct (MDFD) for the 4020-type radial fans. I've designed it to fit a Flsun i3 C (2017).
The ducts will simply slide into the fan's opening and don't need to be attached otherwise. The mount also allows both fans to be rotated out of the way when no part cooling is desired. In my case they are quickly disconnected through terminal block connectors on top of the extruder carriage.
The ducts CAN be printed even if you don't have any part cooling installed yet. Just print one side first, install it and use it for the second one.
- 1x M3x25mm
- 1x M3x30mm
- 2x M3 Hex Nut
- 1x Printed 7mm Spacer for the left fan
- 1x Printed MDFD_4020 Mount (or another designed for your printer's specs)