KY-040 Rotary Encoder Knurled Knob

thingiverse

A knurled knob for the KY-040 rotary encoder, although it should work for any sort of rotary encoder or potentiometer with a 6.0 mm diameter x 12.5 mm length shaft that features a 4.5 mm flat with a length of 10.0 mm. The included .stl file prints a reasonably snug model on my slicer/printer. The easiest print orientation is opposite the model's orientation in Fusion 360 i.e. print the model with the knob cap in contact with the printer bed. I am including the Fusion 360 .f3d file so the model can be fine tuned for shaft snugness, knob diameter, etc. Just edit the sketch dimensions and the parametrization should carry out the rest of the calculations.