Knob replacement for gas stove

A coworker asked me if I could design and print a turn knob for his small gas stove, as the original broke an he could not find where to buy a replacement. I did it, it worked on second print. So I figured might as well give it to the world.

Note that the valve shaft is 5 mm in diameter, and has two parallel notches, one on each side, for a lock (potentiometer shafts have a single notch for locking). Anyway, look at the pictures if you don't know what I mean, make sure it's what you got.