Parametric Camp Gas Stove Knob with Grip (or volume control, or whatever).

thingiverse

Don't attempt using pliers on your malfunctioning gas stove for camping; instead, this versatile tool also functions as a volume control knob. To operate in OpenSCAD, simply set the desired parameters and print it out. Secure the knob to the shaft by placing an M3 nut inside the nut trap and inserting an M3 bolt through the hole, then tighten for stability. Remember when adjusting variables: 'flat' refers to the flat part that slides onto the shaft, measured as a percentage of the shaft diameter (e.g., 0.5 = half) or set it to zero if not required.