Abstract: A fiber processing device and a method for operating a fiber processing device are described, wherein the fiber processing device has at least one forming station with an exchangeable tool and an alignment unit which has a plurality of outlet openings for a medium, wherein a medium for displacing and positioning fibers on the surface of a tool is dispensed via the outlet openings in determinable time periods, wherein different tools can be received in the forming station in order to produce different three-dimensional molded parts, wherein a tool received in the forming station is exchanged for another tool, and the outlet openings of at least one alignment unit are changed in accordance with the received tool and its configuration.