Effetre glass (, Italian ''F3'', abbreviated form of ''fratelli tre'', "three brothers"), once known as Moretti glass, is a kind of glass used in
lampworking
Lampworking is a type of glasswork in which a Blowtorch, torch or lamp is used to melt the glass. Once in a molten state, the glass is formed by blowing and shaping with tools and hand movements. It is also known as flameworking or torchworking, ...
. It is considered a medium-soft glass and is popular because of its wide range of colors and the ease with which it is molded and shaped when hot. Genuine Effetre glass is made in Italy by the Effetre Murano S.r.l, on the island of
Murano
Murano is a series of islands linked by bridges in the Venetian Lagoon, northern Italy. It lies about north of Venice and measures about across with a population of just over 5,000 (2004 figures). It is famous for its glass making. It was o ...
. It has a working temperature of and a
coefficient of expansion
Thermal expansion is the tendency of matter to increase in length, area, or volume, changing its size and density, in response to an increase in temperature (usually excluding phase transitions).
Substances usually contract with decreasing temp ...
value of 104.
Effetre is a variety of
soda-lime glass
Soda lime, a mixture of sodium hydroxide (NaOH) and calcium oxide (CaO), is used in granular form within recirculating breathing environments like general anesthesia and its breathing circuit, submarines, rebreathers, and hyperbaric chambers and ...
.
References
External links
Effetre home page
Glass production
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