Vectrex joystick knob M3x0,5 threads

thingiverse

I noticed there was a few vectrex joystick knobs here on Thingiverse but none that actually looks like the original in shape and size. So I hereby try to remedy that by modelling actual threads to my old CAD model of the joystick knob I used back when I used to make joystick knobs in metal on a CNC mill several years ago. I recently gave away my 3D printer to someone wanting to get into the hobby, so I apologize that will have to upload a model that I haven't tried printing myself yet. I may or may not also apologize for that the STL model could be scaled wrong. Somehow the models looses their scale when I export to STL. All dimensions is in the picture I also uploaded together with the STL, so it shouldn't be hard for you to scale the print to the right size. Feedback is nice. If you printed this and it did not fit. Please tell me what to change and why and I will make update the model if needed.