Device for additive manufacturing of three-dimensional objects by means of a laser sintering or laser melting process, wherein the device comprises: - a building chamber housed in a housing; - a first dosing chamber (2, 3, 31, 32); - at least one second dosing chamber (2, 3, 31, 32); - a device for applying layers of the superstructure material; identified by - a first powder circuit comprising a first conveying element, which is set up to transport a first building material; and a second powder circuit comprising a second conveying element which is designed to transport a second building material; wherein the two support elements (13, 17, 22; 14, 18, 21) for the transport of different construction materials (9, 10) separate feed lines (37, 38) to at least one dosing chamber (2, 3), comprise, wherein the first powder circuit comprises a first supply line which is configured to supply the first building material to the first dosing chamber (2, 3, 31, 32), and the second powder circuit comprises a second supply line which is configured to supply the second building material to the at least one second dosing chamber (2, 3, 31, 32); and wherein the first dosing chamber (2, 3, 31, 32) and the at least one second dosing chamber (2, 3, 31, 32) are rotatably mounted on a rotary table, so that one of the dosing chambers (2, 3, 31, 32) can be brought into the vicinity of the construction chamber. - a building chamber housed in a housing; - a first dosing chamber (2, 3, 31, 32); - at least one second dosing chamber (2, 3, 31, 32); - a device for applying layers of the superstructure material; identified by - a first powder circuit comprising a first conveying element, which is set up to transport a first building material; and a second powder circuit comprising a second conveying element which is designed to transport a second building material; wherein the two support elements (13, 17, 22; 14, 18, 21) for the transport of different construction materials (9, 10) separate feed lines (37, 38) to at least one dosing chamber (2, 3), comprise, wherein the first powder circuit comprises a first supply line which is configured to supply the first building material to the first dosing chamber (2, 3, 31, 32), and the second powder circuit comprises a second supply line which is configured to supply the second building material to the at least one second dosing chamber (2, 3, 31, 32); and wherein the first dosing chamber (2, 3, 31, 32) and the at least one second dosing chamber (2, 3, 31, 32) are rotatably mounted on a rotary table, so that one of the dosing chambers (2, 3, 31, 32) can be brought into the vicinity of the construction chamber. wherein the two support elements (13, 17, 22; 14, 18, 21) for the transport of different construction materials (9, 10) separate feed lines (37, 38) to at least one dosing chamber (2, 3), comprise, wherein the first powder circuit comprises a first supply line which is configured to supply the first building material to the first dosing chamber (2, 3, 31, 32), and the second powder circuit comprises a second supply line which is configured to supply the second building material to the at least one second dosing chamber (2, 3, 31, 32); and wherein the first dosing chamber (2, 3, 31, 32) and the at least one second dosing chamber (2, 3, 31, 32) are rotatably mounted on a rotary table, so that one of the dosing chambers (2, 3, 31, 32) can be brought into the vicinity of the construction chamber.