the temperature of the blank for that matter thus a profile 20 of force characteristics for a properly stamped part 12 having a thin film of oil or without oil may be recorded and used to detect defective parts 12 thus the profile 20 may be one of many that the user may select based upon the part 12 being stamped the material used in the blank and the temperature of the die 16 or whether or not a film of oil was used the measured forces are compared to the selected profile 20 to determine whether the stamping process produced an abnormal or defective part 12 with reference now to fig8 an operation of the system 10 is provided the system 10 includes a plurality of dies 16 disposed downstream a steel blank feeder the steel blank feeder collects blanks and positions them in between the press and cushion slides once the blank of material 14 is fed the slide and cushion presses are displaced towards one another and the tabs 26 of the slide press 22 engage the binders 28 so as to hold the blank in position during forming operations as the presses are pressed towards one another the forces exerted by the presses are measured by the sensors 18 the forces are measured throughout the stamping operation of a respective die 16 which is until the presses are displaced from each other the blank of material 14 is fed downstream the line through each of the dies 16 in the instant case three other die 16 presses are shown.