The glass is scribed with a diamond or with a hard
metal scraper and then broken. The resulting break
edges are untreated and sharp-edged.

The glass with a sharp cutting edge
(like in point 1) is no longer sharp-edged,
so there is no risk of injury.

The fracture surface of the glasses is matt-finished.
In addition, the edge can be hemmed like in point 2.

The fracture surface is rounded off like a "C"
in the grinding process. It is matt.

The glass is provided in the edge area with
a facet, which is also applied in the grinding
process. A facet is generally larger than a hem.

The edge versions listed in points 3 - 5
can be additionally brightly polished.

The sharp corners of the glasses in rectangular shape
are chamfered to avoid the risk of injury.