32mm Dial Knob

Suits 6mm shaft with flat...

Design has supports built in (0.2mm Z seperation)...

Print with plenty of outlines and top/bottom layers or high infill...

I printed with 0.4 nozzle 0.1 layer height 1.2mm walls/top/bottom %30 infill...

If you slicer can separate bodies the supports only need a single outline and 3 top layers...