Systems for and methods of forming structural components, such as a spar cap (503), from layers of a fiber reinforced material obtained from rolls of the material are disclosed. The system comprising: a plurality of rolls (514) including a first roll (514a) and a second roll (514b) of the fiber reinforced material (504), the first roll has one or more first lines (530) printed thereon. The first lines indicating where the fiber reinforced material on the first roll is to be separated into a plurality of discrete first pieces (531-1) for forming the structural component (503). The fiber reinforced material on the second roll has one or more second lines (530) printed thereon. The second lines indicating where the fiber reinforced material on the second roll is to be separated into a plurality of discrete second pieces (531-2) for forming the structural component (503). The systems and methods achieve a substantial reduction in the amount of wasted material.