I'm using this shape to determine how strong a certain material is.For example, print this with Colorfabb XT with 2-pass, 20% infill, and print it with 100% infill.Then compare the strength of the two parts:While the 100% piece is pretty much unbreakable, you can easily break the 20% infill part in half with two flat pliers.You can also feel the difference between the two parts: 100% feels massive, while 20% feels somewhat "wrong".