Roman Mold-Blown Glass – The Metropolitan Museum of Art https://www.metmuseum.org/essays/roman-mold-blown-glass
The invention of glassblowing led to an enormous increase in the range of shapes and designs that glassworkers could produce, and the mold-blowing process soon developed as an offshoot of free-blowing.
Next, the glassblower—who may not have been the same person as the mold maker—would
