Blown Mold

Mold Blowing

Blown Mold

By about A.D. 20, Roman workers had discovered that a bubble of molten glass could be lowered into a mold and then further inflated to fill the mold. In this way, the full-size vessel, complete with elaborate decoration, was made almost instantly. http://www.cmog.org/

Tags: Corning Museum of Glass,glassmaking processes,c...