Glassmaking Technique: Core-Formed Glass

Core forming is one of the earliest glassmaking techniques. Glassmakers shaped the body of the vessel around a core, wound colored trails around it, and added handles and a rim. They then let the vessel cool and removed the core. Watch a demonstration of this ancient method in this video, featuring footage from the Corning Museum of Glass.

Footage courtesy of
The Corning Museum of Glass
Corning, New York