I needed a knob for a rotary encoder, and I thought this would be a good training (I started using Fusion 360 less than a week before, in order to learn 3D Modeling).
I had to print a few knobs, and ajust knob size until it fit perfectly, but the result is good. It fit well and doesn't go off easily.
Feel free to use it and to give any feedback.
Sunlu Carbon PLA