Shower knob for mixer

The mixer knob on my shower mixer broke completely. Printed this as a replacement part. Works very well and is way cheaper than buying the replacement.
It's a very simple design but perhaps someone gets inspired. Maybe as a beginner excercise in freecad! 

freecad, slic3r, prusa, open source, maker, diy, knob, shower mixer, replacement part

freecad> slic3r 0.2 20%> prusa i3 mk2 PETG