Greetings chaps, This is a pic of the latest set upon thr Arno. I had to make a double ended bolt with a square center piece. The job came from Hex bar the same size as the nuts. The thread is a Victorian Railways thread 1 1/8 X 11 TPI. The pic was taken at the end of caselating the nuts. I had tried to use the monster dividing head I have but changed to the rotary table. Trying to save time does not always work. Yours 4-6-4