an improved interposer punch apparatus including a plurality of elongated punch elements , a head slidably supporting the punch elements , means to urge the punch elements in an extended position , a stripper plate , and a base for supporting a substrate to be punched with apertures for receiving the lower ends of the punch elements , the imrovement being a means in said base for forcibly displacing slugs of material punched from a substrate from the ends of the punch elements following a punching operation .