It’s not a simple task to produce glass objects using 3D printing technologies, as just a few groups of researchers around the world have attempted this feat using additive methods. There have been objects made by printing molten glass, but one disadvantage is that this requires extremely high temperatures and heat-​resistant equipment. Other methods include powdered ceramic particles that can be printed at room temperature and then sintered later to create glass, but the resulting sculptures are not complex to say the least. ETH Zurich researchers have devised a method to change all of this.