metallized through hole 32 whereby the photoresist 38 has been stripped off the surface of the carrier sheet and in fig3 b the molded elastomer button 50 is inserted and docked into the metallized hole 32 of the carrier sheet the non button or pad areas have been masked and then sputtered or coated with conductive metallic materials and thereafter a electrolessly plated metal shell is formed over the elastomer button 50 as described hereinbelow as shown in fig4 a which is a modification of fig3 a and 3b an evaporation mask 52 is positioned on the carrier sheet surface which comprises a planar structure with through holes 32 and with the buttons 50 extending through the holes in self alignment as shown in fig4 b an evaporated sputtered or sprayed metal coating 54 is provided on the surface of the projecting button 50 and on the evaporation mask 52 such metal coating may be nickel coating or copper or of titanium alloy which is super elastic although other elastic metals such as gold and the like would also be applicable to the foregoing procedure as indicated in fig4 c the mask 52 is then lifted away from the carrier sheet leaving the coating 54 only on the button surface contacting through the through holed pad 56 in the illustration of fig4 d the arrangement is inverted and the mask 52 applied to the opposite side and the metallization process is repeated.