I got a length of 10mm x 25mm flat steel bar and wanted to cut it into 20mm pieces. I need quite a few so set up my big evolution chop saw and made a stop block our of wood at the right hand side 20mm from the blade. I thought I could feed the metal in chopping 20mm pieces off the length. First piece was fine; next piece must of caught the blade after it had cut through and shot off like a bullet somewhere into my workshop! How can I cut 20mm pieces off a length without having a 20mm x 25mm piece of steel bar embedded into my forehead?