sustainability and beauty
in one

Traditional handcrafted glassblowing is not a zero-waste process. Once melted, glass loses the quality required for repeated blowing.

When a handblown piece is knocked off the blowpipe, roughly 1/3 of the glass is cast aside. This excess material is commonly regarded as waste.

Instead of being hauled to a landfill, these fragments of glass are carefully stored and reimagined as a valuable raw material for transformation into something new.

The cullet is sorted by colour and stored, ready for a new life as BROKISGLASS.

The transformation begins by crushing the cullet and arranging the fragments in a mould. It is then melted in a fusing furnace, forming the foundation of the new material.

The fusing process creates panels with a unique structure and colour composition. The final aesthetic can be customized by varying the size and combination of glass fragments.

The raw panels are precisely cut into any shape using water jet technology, followed by optional finishing touches like sandblasting, frosting, or edge polishing.

The result is BROKISGLASS, panels designed to meet the unique needs of individual projects. The journey of cullet comes full circle, achieving an almost zero-waste cycle.

The base material for glassmaking is silica sand, which, when mixed with specific additives, forms a batch that is melted in a glass furnace to create molten glass.

In the glass furnace, hot molten glass is used for gathering onto a blowpipe and for hand-blowing glass. After a certain period, there is not enough molten glass left in the furnace, and it needs to be replaced. The remaining glass is removed from the furnace, resulting in massif, which can then be reused for recycling.

The massif fragments produced at Janštejn Glassworks are carefully sorted and stored separately by colour.

Once cooled, the massif is crushed into fragments with varying shades and colours.

The crushed massif fragments are placed into a mould and melted in a fusing furnace.

During melting, the massif fuses into a unique panel with a entirely unique colour composition.