Cubic, tetrahedral and hierarchical infills

In 2015 IceSL introduced self-supported cubic infills for FDM 3D printing, as well as their hierarchical and tetrahedral versions. The hierarchical version has been superseded by the progressive infill patterns (see below). Tetrahedral infills are now the default as they present an excellent compromise in speed, strength and weight.

Left:To the best of our knowledge, the very first cubic infill. Middle: The first hierarchical cubic infill. Right: The first progressive cubic infill, from 20% (bottom) to 50% (top)