Flat or curved panels are often stiffened with the use of ribs. The overall stiffness can be enhanced with only a relatively modest increase in weight and thus this is a popular approach in aeropsace engineering where weight minimization is a paramount design consideration. The 3D printer is a useful means of producing relatively high resolution iso/othergrids, which can then be tested in the lab.

ISO/orthogrid structures

ISO/orthogrid structures continued