[en] This chapter discusses sophisticated metalworking techniques that are needed to convert the basic raw materials into functioning superconductors. The first section of the chapter discusses Monoliths and Strands and also considers, in the second section, Cables and Braids. Also considered in section one is materials selection, with particular reference to the mechanical, electrical, magnetic, and thermal properties of the Cu and Al, which are used as stabilizers in all classes of conductor. The third section deals with the various ways in which superconductors can be joined. Superconductor materials such as niobium, tantalum, titanium and Ti-Nb alloy rods are discussed. Aluminum and copper as stabilizer materials are discussed. Billet design and assembly are examined