Making a Pontil 
To be able to detach the base from the pipe,  an iron is used to gather a small amount of glass, known  as a pontil. A cross is then cut into the  hot glass, creating the company’s imprint.  Photo 11 of 17 in Inside Master Glassmaker Simon Pearce’s Sustainable Factory in Vermont

Inside Master Glassmaker Simon Pearce’s Sustainable Factory in Vermont

11 of 17

4. Making a Pontil: To be able to detach the base from the pipe, an iron is used to gather a small amount of glass, known as a pontil. A cross is then cut into the hot glass, creating the company’s imprint.