The Furnace

In glassmakers slang, our glass-melting furnace is known as a tank furnace. In spite of coming with a high price tag (something like 3 million Swiss franks), the service life or «furnace campaign», as it is called, only extends to between 5 and 7 years. After the furnace has burnt itself out, it will be completely rebuilt from scratch by professional furnace builders, an operation lasting around 2 months.

Technical specifications of the present Glasi furnace

Year of construction


Start of furnace campaign

7. February 2012

Term of furnace campaign

7 years without interruption, 24 hours round the clock

Furnace building company

Ofenbaufirma Glashüttentechnik Grob [Grob Glass Works Technology and Glass Furnace Builders], D-Gmünden-Main, GERMANY

Furnace stones

Top-quality, heat resistant stones cast to special measurements

Origin of the stones

USA, Italy and Germany




3 million Swiss francs


4 tons of glass per day, six extraction points

Furnace temperature

1500 degrees

Energy source

Butane gas and electricity