This goblet is made using mezza-stampatura, also known as mezza-forma (Italian, “half mold”). With this technique, vertical ribs are made on the lower part of a blown object by inflating the bottom half of the parison into a dip mold. The goblet shown in this video is decorated with gilding and enameling. Learn more about this object in The Techniques of Renaissance Venetian Glassworking by William Gudenrath http://renvenetian.cmog.org/object/enameled-goblet
The Venetian glass industry enjoyed a golden age during the Renaissance. By the early 1500s, the wonders of Venetian glass were well known throughout western Europe. Not well known, however, was how these objects were made. Until now. The result of 30+ years of research by William Gudenrath, The Techniques of Renaissance Venetian Glassworking – http://renvenetian.cmog.org – presents 35 complete reconstructions of Venetian glassmaking techniques through detailed 360˚ photography and high-definition video.