Procedural Composite Material - Macro Foam

This is a test of what I call Macro Foam. It uses the capabilities for 3D printing to produce accurate arrangements of multiple materials to create a digital composite, and demonstrates a procedurally generated example. This material was intended to have specifically controllable properties of density and compressibility (once the materials are calibrated through testing). It is made of a solid material, a soft, elastic material, and empty space. The idea (totally untested) is that the material