Frigidaire Stove Knob

Multiple knobs from my Frigidaire gas range broke within two years. Replacements are expensive, so I modeled this myself with measurements taken from a working knob. 

The length of the shaft is 30mm.
The outer diameter of the shaft is 11.25mm.
The inner diameter of the shaft is 6.4mm.
The secant line of the shaft notch is 4.0mm.

The knobs are a good distance away from direct heat, but needless to say, be careful. Print in a material that can stand the heat, and don't be stupid.

Let me know if this works for anything else as well! I modeled this in Fusion 360 and I can parametrically change any of the above values, so let me know if you need it in some other dimensions.