Disclaimer: This is not my design. Someone requested the .stl and I cannot find the original Thingiverse link. If you know whose design this is, please let me know so I can give proper credit.

This is the best control knob that I have found for my Ender 3. Many models don't fit or are wonky but I love this one/

Print with supports with the bottom on the button flat on the print bed but take note on how you will have to remove supports carefully.