A method and apparatus for depositing material on a substrate is provided in which material is deposited on a substrate by arranging the material in a container, and contacting the surface of the material with a beam of electrons so as to evaporate the material and transfer it to the substrate. Each mesh advertisement message specifies a corresponding metric for reaching the mesh portal and has a corresponding signal strength indicator. When assembled, the model provides optimum header layout and pathways to accurately fit within an available space, and provides accurate dimensions to aid in cutting forming sections of the exhaust headers from pre-bent metal tubing sections and the proper relative rotation between them. The baths can coat a variety of metal substrates, including brass, copper and most ferrous metals. This invention not only allows the type of scalability to be selected but also to the degree to which the scalability will be used.