After the control knob of my Beko dishwasher broke in my fingers, I made this non genuine replacement part for the DFN05X10S dishwasher.
Fits and works well.
After printing, before fitting
To get this to fit I intentionally made it to be a tight fit. It is actually that tight a fit that to make it go on, boil a kettle and run some boiling water onto the sleeve where it slides over the switch cam, turny bit.
Make sure you don't burn/scald yourself as I did this pour over, wait a few seconds, tip the water out three times to soften the sleeve a little. After this it pushed on fairly easily and then cooled quickly to fit perfectly.

I printed with supports as it was my default profile, but don't think they are necessary as they are only in the finger grips cut-outs which are quite small.
Printed with three walls to add strength to the sleeve making it less likely to break with the rotation applied in normal use.