Machining some very small M1.9 screws for a Nintendo controller. Just creating a model was challenging enough. Once a model was created, it took some time to get a program generated to cut the thread. Once I had one toolpath generated, I made five more copies and moved the start point of the thread up by .002″ to generate the .010″ land at the bottom of the thread. This worked very well. The resulting screw fit as good as the original. The cut was supposed to finish closer to the head of the screw, like in the model. You can also hear ‘runout’ in the video. I don’t understand where that came from. The part was located with an indicator. It seems there was something strange going on with the computer running the Sherline control software.