Cutting glass with rich decoration is a traditional handicraft technique of decorative glass refinement. The cut glass is mainly used to decorate vases, bowls, flat trays, decanters, bottles, baskets, table drinking glass and other shapes of practical use.
From a technical point of view, it is the mechanical removal of glass with a free or bound abrasive. The cuts are made by means of discs (most often diamond, but also carborundum and water-cooled electrite) rotating around a vertical axis on a ball machine or around a horizontal axis on a trowel machine. The basic cuts are wedge, round, straight and square. Wedge cuts produce patterns in the form of stars, mules, goats, claws, Viennese mats or triangular, hexagonal or octagonal stones. The rounded cuts, for a change, give rise to the so-called cones, cones or spots. The purpose of the technique of cutting glass with rich decoration is to try to create a rich pattern from these elements, often spread over the entire outer surface of the product. The surface of the glass thus decorated reflects the incident light from the individual edges and thus creates a shimmering ornament.