Fully Parametric 90° Fan Mount

a mount to attach a fan in an 90° angle to a surface.
fully parametric, in the scad-file you can define your fan-size, can adjust thickness, width, depth, height, material thickness and add sunks for countersunk screws.
supported fan types so far:
* 40mm,
* 60mm,
* 80mm,
* 92mm
* 120mm
* 135mm,
* 140mm,
if "your" fan size is missing just let me know, measure the outside frame edge and the center-to-center-hole-distance and i'll add it here.
i know, not the best sca