Both require high molding costs, and molds are available for injection molding of plastic parts and press molding of metal cases.
Therefore, the design of their own chassis, usually purely handmade, supplemented by general-purpose machinery such as drills and other tools, the use of easy-to-process shaping of materials such as aluminum, angle aluminum, and so on, as well as the use of Plexiglas and other easy-to-process transparent and high-gloss materials to produce.