a method of manufacturing a configured cut - out in a sheet of material by arranging a pair of dies to support a sheet of material therebetween , pushing a punch shaft through one die , then through the sheet of material and then through the other die , then retracting the punch shaft to effectuate initiation of a nibbling operation to produce a cut - out in the sheet of material to correspond to a cut - out in a template , which template is traced by a pilot finger during common motion of the template and the sheet of material .