Glassblowing is a glassforming technique that involves inflating molten glass into a bubble with the aid of a blowpipe. A person who blows glass is called a glassblower, glassmith, or gaffer. A lampworker manipulates glass with the use of a torch on a smaller scale, such as in producing precision laboratory glassware out of borosilicate glass.
A glassworker blows air into the glass, creating a cavity inside
A stage in the manufacture of a Bristol blue glass ship's decanter. The blowpipe is being held in the glassblower's left hand. The glass is glowing yellow.
Glassworking in a hot shop in New York City
Glassblower Jean-Pierre Canlis sculpting a section of his piece "Insignificance"
The term blowpipe refers to one of several tools used to direct streams of gases into any of several working media.
Manual blowpipe.
Diagram of a bellows-operated blowpipe, circa 1827, from A Practical Treatise on the Use of the Blowpipe
Kit for blowpipe analysis Carl Osterland, Freiberg, c. 1870