it is apparent that the coatings formed by the method of the present invention produce extremely good results when being used in a lead cutting machine a mechanism for effecting both the cutting of ic leads and the detecting of the insertion of ic lead with respect to 20 pins with a width of 300 mills and another mechanism with respect to 40 pins with a width of 600 mills were combined to produce the apparatus of the invention by using both a cutting blade member having a blade structure which was provided with the lead detecting electrode coatings shown in fig1 and another cutting blade having through holes into which the excess portion of each head received a direct current was applied to an ic lead from each of the ic lead detection circuits 12 shown in fig4 a in order to detect the insertion of the lead at the time of the cutting of the ic lead so that the insertion of the ic lead 10 was detected by the presence of the current i passing through the lead 10 during the detection the voltage applied to the ic lead was set at a value of 1 4 of the breakdown voltage of the ic element so as to prevent the breakage of the ic element by the.