Is an old almost forgotten glass art to decorate glass. The especially filigree motives are engraved at first on a zinc plate. Afterwards they are trace by the pantograph and thereby it is copied at the same time on the rotary glass, which was dipped in wax.
From the pot furnace taken gobs and with the blowpipe under constant turning formed glass shape.
A refinement technique for the discoloration of the glass surface. The pickling mass is melt down in the surface.
A furnace made of fire-proof chamotte. In so called harbours is melted the mixture to glass mass. The heating occur through gas, oil or electricity.
This Glass includes potassium carbonate as well as sodium carbonate as flux.
This glass includes potassium carbonate, K2CO3 as flux.
It was invented in England at the beginning of the 19th century. The hot glass mass is taken from the furnace with the collecting iron and is poured into the mould of steel. The mould is locked on the upper part and the mass is compressed by leverage. After cooling, the finished product is taken out and is further processed.