The invention relates to a semi-finished product for producing a three-dimensional component having a metallic base plate which has at least one predefined bending line, characterized in that functional elements are provided on the base plate in the region of a bending line, on both sides of the bending line, said functional elements making contact with one another when the base plate is reshaped along the bending line and permitting a connection. This invention further relates to a method for producing three-dimensional components from said semi-finished product and to said component