Arturia BeatStep Pro Knob

The inside is channel is chamfered so it can be printed without supports. I printed mine at 0.1mm and it fits perfectly. A bit tighter than the official knobs.

If you need to adjust the tolerance for the potentiometer you can download the Fusion360 file and change the “OffsetFaces1” node near the very end of the timeline. A step file is also included.