SIMBIOSIS is a collection of countertop washbasins made of sand, produced with the 3D printing technology of Sandhelden. Its name refers to the close connection between architecture and product design, which have interacted symbiotically throughout history. The collection can be understood as an architectural product with proportions and inspiration typical from classic construction techniques. Aiming to interconnect rational furniture production, modern visual arts, and everyday life, SIMBIOSIS appears as a logical, timeless, and functional solution for every bathroom space.