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Pontil

A metal rod to which vessels may be transferred from the blow pipe for further working.  Also used for applying handles and trails.  The pontil rod is usually solid but on Roman glass a blow pipe was sometimes used leaving a ring-shaped or tubular pontil scar. 

Pontil

A metal rod to which vessels may be transferred from the blow pipe for further working.  Also used for applying handles and trails.  The pontil rod is usually solid but on Roman glass a blow pipe was sometimes used leaving a ring-shaped or tubular pontil scar.