before processing the plate workpiece in {HEAD ~ the region} of the formed shape, securing the selected tool punch to the tool punch holder, and securing {TAIL ~ the selected tool die} to the tool die holder 
before processing the plate workpiece in { HEAD ~ the region } of the formed shape , securing the selected tool punch to the tool punch holder , and securing { TAIL ~ the selected tool die } to the tool die holder
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH