A few nice screw machining images I found:
Push the button
Image by iNkMan_
I watched THE MACHINIST recently. Its one of those slow films that people usually dont have the patience for. It had a very good story and I personally think the movie is a masterpiece. While at work on Friday, I went in to the forge and saw these various machines that out factory machinists used and was immediately reminded of the film again when I saw this STOP/breaker button. A guy lost his arm in the film coz it got stuck in a machine and the STOP button wouldnt work.
Screw Machine China
Image by Zabowski