Pressure die casting is a fast and cost-effective production method for mass producing parts with tight tolerances. It works by injecting molten material at high pressure into a steel mold, where it solidifies quickly into the desired net shape. High pressure die casting is used for parts that require close tolerances and complex geometries, as the high pressure can force the material into more detailed shapes. However, the expensive molds mean pressure die casting is only economically viable for high-volume production.