I made it on a Prusaa MK4 input Shaper 0.4mm nozzle with no supports, 15% infill, 0.20 mm SPEED with PETG.
The fan I use is a 120mm Noctua NF-S12A, it's quiet and powerful. You need a M6 screw of 35mm and a M6 nut.
I recommend placing it on the bed like in the picture for better clearance and no support.
There is a MirrorArm file that makes it possible to mount it the other way.
The design is made on cad.onshape.com you can change the parameters to your needs.
Please share if you make it I would love to see it!!!!
The author marked this model as their own original creation.