a method and a device for producing fiber preforms which are , for example , a precursor in the production of fiber reinforced plastic components , are disclosed . the method includes the steps of tensioning the threads or rovings , draping the threads or rovings over a molding tool and attaching the threads or rovings to a fiber preform . a plurality of separate grips grip individual or a plurality of threads or rovings at a plurality of thread transfer points allocated respectively to the individual grippers . the grippers are then moved in substantially parallel paths relative to each other and the threads or rovings are thereby tensioned side by side .