I just built a spindle shaft encoder on my sherline lathe. All together there are under $20 in parts. It seems to be working pretty solidly, but I would like to test it with some threading. I got the lathe for an electronics project. Can anyone volunteer a file to thread some 1/4" rod so I can test it? I run it on LinuxCNC. I don't have any software that generates threading on the lathe.