You can now 3D print a tiny pretzel made of glass

Scientists in Germany have 3D printed very intricate tiny objects using glass. And of course, one of these objects is a pretzel. In the future, the technique could be used to 3D print more useful things, like complex lenses, filters, and even ornaments that generally need highly skilled artisans to make.
The researchers used a type of “liquid glass” to make complex shapes that are smooth, transparent, and have a very high resolution, according to a study published today in Nature. Mo