Lighting Products and Fixtures Design Oberhauser's Balloon Outdoor Lightning by Martin Oberhauser Oberhauser's Ballon is an outdoor lamp produced in three sizes, with diameters of 30 cm, 70 cm and 100 cm. The lamp is made of cement using powder bed concrete 3D printing, a method also known as Selective Paste Intrusion. In this process, cement paste is injected into a powder bed, and the form is built layer by layer. No formwork is required, so complex and detailed geometries can be produced. The material is highly weather resistant and therefore suited to outdoor use. Efficient material use limits waste during production.