The file '120mm Laminar Flow Fan Stator Duct With Bezier Cone 3D Printer Model' is (stl) file type, size is 1.4MB.
remixed fan duct by Segelkram to include a 40mm diameter bezier cone in the center (the size of a typical fan center hub) which should reduce turbulence and improve laminar flow.
recommend printing with supports enabled. The cone base needs to 'float' a little bit to facilitate removal from the print bed without breaking the fins.
See also the velocity stack generator for a matching velocity stack for this: https://www.thingiverse.com/thing:6659902
fan_stator_with_cone3.stl | 3.5MB |