Sustainable Products, Projects and Green Design Natural Composite Pillar Research Prototype by Stylianos Dritsas The prototype is one of the largest 3D printed biological artifacts today, created using a novel sustainable manufacturing technology deploying exclusively natural materials: Cellulose, which is the most abundant biomaterial on earth, associated with plant matter, and Chitin, a biomolecule extracted from the exoskeleton of insects and arthropods. The physical and mechanical material properties are in the range of high-density synthetic foams and low-density timbers. The artifact is based on renewable sources, widely available in nearly every ecosystem and naturally biodegradable.