How is La Rochere glass made?

The main ingredients used in the production of La Rochere glass are silica sand, soda ash, and lime. These materials are mixed together in specific proportions and then melted at a high temperature.

Melting

The mixture of raw materials is melted in a furnace at a temperature of around 1,500 degrees Celsius. This high temperature causes the materials to fuse together and form a molten glass liquid.

Refining

The molten glass liquid is then refined to remove any impurities. This is done by adding various chemicals to the glass, such as sulfur and saltpeter. The refining process helps to produce a clear and blemish-free glass.

Blowing

The refined glass liquid is then blown into molds to create the desired shapes. This is done by skilled craftsmen using traditional techniques. The glass is blown into the mold and then shaped using various tools.

Annealing

Once the glass has been blown into the mold, it is annealed. This is a process of gradually cooling the glass to reduce stress and prevent it from cracking. The annealing process can take several hours or even days.

Finishing

The finished glass products are then inspected for any defects. Any defective pieces are discarded. The good pieces are then packaged and shipped to customers.