Why is this in here?  Soon after this picture, in the middle of a big job, this 10 Foot Metal Shear stopped working!!!  The Manufacturer wanted an exorbitant price for the replacement electronics!  I studied the machine and it's controls and sensors, did a Flowchart, and a Ghant-type chart for it's operation.  Safety was a prime concern.  I then wrote the program for and installed a small PLC to get the machine up and running quickly!