this is a part I designed for a test prototype, to adapt two 30mm blowers, a duet smart effector, a revo micro, and its 20mm fan and 5 volt regulator. can be used with pretty much any mag arm system for m3 screws, and is meant to be used wit h the stock 55mm across duet smart effector PCB carriages.
I had to reverse engineer alot of the original shape of the original fan shroud in the e3d revo and then modify it to fit the shrouds, be printable, and not immediately snap.
you will need supports, try this in different orientations to find the best way for your printer. I used Carbon PC for this example but should work in ABS as well.
designed in Freecad
The author marked this model as their own original creation.