I wanted a basic knob that is good to grip.
The knob is printed on its side, so that the layers will make the knob steady to grab.

Printing:

Print with support material (touching buildplate).
Biggest possible layer height (.25 +)

Creality

Ender 3

No

Yes

100

20

I designed this knob in Tinkercad. It concists on 3 cylinders. the outside cylinder has little sides so it adds to the grippyness and style.