Implementation of functional thin films in narrow pipes and complex shapes using conventional deposition methods, such as Physical Vapour Deposition (PVD), is often difficult. This project will enable the integration of thin films by combining PVD and electroforming on so-called “sacrificial” mandrels, or skeletal mouldings that dissolve and are not part of the final structure. This method will be adapted to millimetre size diameter vacuum pipes, used for capture pumping, and to radio-frequency cavity substrates for superconducting thin films.