The realization by some early first-century glassblower that two soft bubbles of glass can be joined to make a compound object must have been revelatory. The video shows the cup and foot being joined at their tips while both parts are slightly soft; a nearly unbreakable bond results.
Bowl with Conical Foot
| Date | 1st to 2nd century or about 4th century |
| Dimensions | H. 10.6 cm, D. 16.2 cm |
| Accession Number | 54.1.98 (CMOG) |
| Credit | The Corning Museum of Glass (Cat. 100), formerly in the Pierpont Morgan Library. |
| Video Type | full |