Great video[s] ,well done for the "heads up" Derek, so women say men can't multi-task eh? this guy can drill, shape, turn & tend to the boiler at the same time!!, when I was a boy there was a well respected engineering works on the way to school [in Yarm-on-Tees, north yorkshire] called Hauxwells[sadly now turned into flats] & we just HAD to look in , there was all sorts of machinery driven by overhead line shafts, I loved it & the blokes used to let us in to see, never forgotten it [never did like footy& still don't] that was much more fun to me.