The wood for Stefan Knopp's tables is sourced from the core of an enormous tree, with a diameter of at least one meter. It takes several decades for a tree to reach such a size; some slow-growing hardwood trees, like oak or beech, might even need a few hundred years. Each tabletop undergoes a distinct surface treatment, resulting in a unique visual appeal. The application of resins, oils, and lime adds the finishing touches, transforming the tree into an individual masterpiece.