I'd printed it with supports, but this was really hard to remove. Maybe it's better to not even use supports.
It is important that the knob still spins while grinding otherwise it is really hard to handle. My knob still had a pin sticking out, I'd used that so that it locks in the arm of the grinder.
Have been using this for years now and it still going strong!
The author marked this model as their own original creation.