The glassworker can then quickly inflate the molten glass to a coherent blob and work it into a desired shape.
From the en.wikipedia.org
For Ernst's tall, reddish-brown Poet, topped by a sharp-beaked head with a hole for an eye, the glassworker at some stages had the equivalent of a 100-lb.
From the time.com
Inflation occurred when the glassworker blew the molten glass into a sphere which was then stretched or elongated into a vase with a layer of white glass overlying the blue body.
From the en.wikipedia.org
In this way, the shape and the texture of the bubble of glass is determined by the design on the interior of the mold rather than the skill of the glassworker.
From the en.wikipedia.org
More examples
Glass cutter: someone who cuts flat glass to size
A Glazier is a construction professional who selects, cuts, installs, replaces, and removes residential, commercial, and artistic glass. ...