Thomas Kühl (born 1967 in Rendsburg, Germany) began his training with an apprenticeship as a carpenter and Andreas Krob (born 1969 in Niebüll, Denmark) began his as a civil engineer. In 1991, they met during their industrial design studies at the Muthesius School of Arts and Crafts in Kiel, Germany, and continued to work together for a short time after graduating. They combined their ideas into sophisticated technical details in metal and wood. Today, Kühl lives and works as a free-lance designer and interior designer in Hamburg. Andreas Krob, following positions as development manager for various German companies, founded the design studio b4K together with his wife, architect Uta Krob, based in Switzerland.