Modification of the Knobby enclosure to use the widely available EC11 rotary encoder with 20mm knurled shaft, e.g. https://www.tinytronics.nl/shop/en/switches/manual-switches/rotary-encoders/rotary-encoder-ec11-20mm.

Only the body and the knob have been modified, the lid is the same as the original model.

You may need to snip off the mechanical attachment feet to fit the rotary encoder.

Massive thanks to Milo Winningham for the original project and for releasing the source files and STEP models :)