providing a metal sheet having a given size capable of accommodating a plurality of individual metal cards;

providing a ferromagnetic insulating sheet made by containing epoxy in a ferrite to a same size as the metal sheet capable of accommodating the plurality of individual metal cards;

providing an inlay sheet and printing antenna coils on the inlay sheet wherein the printed antenna coils are formed directly adjacent to the insulating sheet; stacking a plurality of sheets inclusive of the insulating sheet and the inlay sheet while forming holes on at least one or more edges of the stacked sheets formed;

fitting the holes formed on the stacked sheets to a plurality of pins located on a loading plate of a cutting tool;

placing the metal sheet on top of the stacked sheets;

forming a metal card sheet through lamination among the metal sheet and the stacked sheets;

forming outlines for the individual metal cards; and

cutting the metal card sheet based on the individual card outlines to form the plurality of individual metal cards,

wherein the cutting the metal card sheet further comprises injecting cooling alcohol while cutting the individual card outlines by the cutting tool in a Computerized Numerical Control (CNC) process.