50mn Fan Holder/Clip for Nema 17 Stepper

This Thing holder (clip style) used to attach a 50mm x 15mm Fan to Nema 17 Stepper Motors. This provides needed cooling to my stepper motors and is small enough to fit on my Mendel. Other fan things I have seen on thingiverse would not fit on my steppers, they all hit something or other preventing installation.

If you use this thing make sure your Fan is 15mm thick. I used an M4 bolt to mount fan; I drilled out the hole a little smaller than bolt so it threaded into the plastic. Installati