Abstract: A method of joining a metal member to a resin member comprising electroforming a roughened surface on a metal member, thereby producing a countless number of minute pores on the surface of the metal member. The cross section of each pore is generally in a shape of a dovetail.
Abstract: A method of firmly joining a metal member developed by electroforming to a resin member. A metal member having a roughened, sponge-like surface is formed by electroforming on an electroform matrix. Then, a resin such as epoxy is applied thereto to develop a first resin layer having a smooth surface. Further, another resin layer is formed on the first resin layer. The resin member is interlocked with the roughened, sponge-like surface for firm joining of the resin member to the metal member.