An object can thus be built up layer by layer. The researchers can change various parameters in each layer, including pore size. “We discovered that by accident, but we can use this to directly influence the pore size of the printed object,” said Masania. These 3D-printed glass objects are still no bigger than a die. Large glass objects, such as bottles, drinking glasses or window panes, cannot be produced in this way “which was not actually the goal of the project,” emphasised Masania. The aim was rather to prove the feasibility of producing glass objects of complex geometry using a 3D printing process. However, the new technology is not just a gimmick. The researchers applied for a patent and are currently negotiating with a major Swiss glassware dealer who wants to use the technology in his company.