Glass is one of the most important highperformance materials due to its high mechanical, thermal, and chemical resilience and unmatched optical properties. Interestingly, glass processing has seen hardly any progress over the centuries. The required hazardous chemicals and high temperatures have signifi cantly limited the wide applicability of glass so far, often making it second choice to polymers which are easier to process. The NeptunLab at Karlsruhe Institute of Technology recently introduced True3DGlass, a novel approach to creating high-quality, transparent, freely definable three-dimensional structures in fused silica glass. True3DGlass will make glass, one of the oldest material mankind has used, one of the crucial materials in innovations of the 21st century.