A friend and I recognized the limits of current infill patterns and decided to design our own. Knowing that a hexagonal structure uses the least material to create a lattice of cells within a given volume, we let our design take inspiration from the way that bee’s nests intersect two opposing honeycomb layers into each other. This model is, of course, only a concept and is not intended to be used for anything other than looking at. I also added a single comb cell stl file so you can see exactly what the shape removed looked like. You can read more about printing with Z-dependent structures here: http://engineerdog.com/2015/03/08/3d-printing-a-3d-honeycomb-infill-concept/