Abstract: The invention relates to a method for the production of moulded parts made of light-metal alloys, particularly using a diecasting method, wherein moulded parts having a reduced weight are produced. According to the invention, the mould cavity (2) is filled with a metal melt, a peripheral layer is hardened, a gas is introduced into the remaining melt and the melt is displaced from the moulding cavity (2), forming a hollow area (5).