Device for producing three-dimensional workpieces, wherein the device comprises: - a build surface which is adapted to receive a molding compound ; and - an irradiation arrangement which is adapted to selectively irradiate the molding compound on the build surface with electromagnetic radiation in order to produce a workpiece by means of an additive layer manufacturing activity, wherein the irradiation arrangement comprises a plurality of irradiation units which are arranged so as to be stationarily within the irradiation arrangement and are unmovable parallel to the build surface , wherein the irradiation units are adapted to irradiate a respective associated individual region of the build surface , wherein the irradiation units each being adapted such that the beams are emitted at an unchangeable angle relative to the irradiation arrangement , wherein the emitted beams of the irradiation units each have a cross-sectional area which corresponds to between 2% and 170% of the area of the respective associated individual region , wherein the device further comprises a control device which is configured to control the irradiation units according to a workpiece layer currently to be produced, characterized in that the control device is configured to control the irradiation units in such a manner that, in order to produce a workpiece layer, they irradiate the molding compound one after the other and/or in a plurality of steps, and wherein the control device is configured to control the irradiation units in such a manner that, in a first irradiation step, a first portion of a workpiece layer to be produced is formed from the molding compound and, in a second irradiation step, a second portion of the workpiece layer to be produced is formed from the molding compound . - a build surface which is adapted to receive a molding compound ; and - an irradiation arrangement which is adapted to selectively irradiate the molding compound on the build surface with electromagnetic radiation in order to produce a workpiece by means of an additive layer manufacturing activity, wherein the irradiation arrangement comprises a plurality of irradiation units which are arranged so as to be stationarily within the irradiation arrangement and are unmovable parallel to the build surface , wherein the irradiation units are adapted to irradiate a respective associated individual region of the build surface , wherein the irradiation units each being adapted such that the beams are emitted at an unchangeable angle relative to the irradiation arrangement , wherein the emitted beams of the irradiation units each have a cross-sectional area which corresponds to between 2% and 170% of the area of the respective associated individual region , wherein the device further comprises a control device which is configured to control the irradiation units according to a workpiece layer currently to be produced, characterized in that the control device is configured to control the irradiation units in such a manner that, in order to produce a workpiece layer, they irradiate the molding compound one after the other and/or in a plurality of steps, and wherein the control device is configured to control the irradiation units in such a manner that, in a first irradiation step, a first portion of a workpiece layer to be produced is formed from the molding compound and, in a second irradiation step, a second portion of the workpiece layer to be produced is formed from the molding compound . <EOS>