3D print files for the iron-storing ferritin protein from Synechococcus CC9311 using the crystal structure 5OUW available at PBD. The PBD structure was formatted in Chimera to generate a space fill model of the monomer and a resulting STL file that can be used for 3D-printing. By 3D-printing 24 print of the monomer, one can assemble the full ferritin protein structure.