This has probably been linked to before - https://youtu.be/ieF3d_YBUh4 - but worth a look if you haven’t seen it. It’s an early/mid thirties film of Morris car production with some nice gems - diamond finished pistons, anyone? This screen capture is of a two bearing crank being forged!
Thanks for posting, Simon, a great piece of period documentation. I particularly like the idea of taking someone straight off the production line to do the commentary Terry