Glues several sheets, which greatly expands the possibilities. With this type of gluing, the glass does not lose its original properties and remains the same transparent.
With the help of a special apparatus, a powerful jet of sand polishes the glass surface, making it matte. It is also possible to draw a picture using paints.
A complex procedure required to obtain holes of different diameters. In the future, such holes are used as fasteners and reference points for glass structures.