One of the tricky aspects of infill optimization is trying to strike a good balance between strength and weight - it can be tough to design a strong, solid part without it ending up as heavy as a doorstop. But now a group of researchers from the Technical University of Denmark, Delft University of Technology, and the Technical University of Munich have developed a new type of infill that imparts durable strength without weighing an object down. Like so many of the most effective human inventions, the researchers' infill design was inspired by naturally occurring structures - in this case, bone. Read more at 3DPrint.com: https://3dprint.com/165006/3d-printed-bone-infill/