Using the measurements I got from PreciseBits (Thank you Ron) I was able to create a nut replica, which I used to cut out the center of a 50mm fan I downloaded from GrabCad.
Now, I’ve increased the thickness and length of the blades to have pretty much 2-2.5mm for every part and have a final 60mm diameter.
I’ll have to find filament for my 3D printer to try and print this, but because the blades are overlapping, I won’t be able to mill this.
But, as a proof of concept, yes the mirror operation in Fusion will allow you to take a PC fan component, and make it compatible with spin rotation of the router.
Hope this helps.