Abstract: Apparatus for use as an electrode, which is particularly suited for use in electro-plating non-continuous conductive objects, particularly double-sided circuit boards, is described. Specifically, this electrode comprises: a housing having a plurality of sides and an internal enclosed air chamber, wherein at least one of the sides is flexible and conductive and the remaining sides are rigid and non-conductive; a port extending through one of the sides and into the chamber for routing a compressed fluid into the chamber; and means for holding a printed circuit board against the electrode such that whenever sufficient fluid is routed into the chamber the flexible side forceably distends into abutting electrical contact with a surface of the printed circuit board.