CDTF and other students of the course "Technical German for international students" visited the workshop for glass design Peters. Here, the experienced the close interconnetion of technology and artwork. Anke schanz (photo 4th from the left), glass processor, explained the production process from the artist's design to the completion of individual windows or even entire facades, presenting several techniques of glass design such as digital and screen printing, and etching. One of the properties of glass is its chemical resistance which explains why there are no alternatives to this highly toxic substance. Anke Schanz demonstrated how individual pieces of glass are cut with a glass cutter. The fissure, the result of scoring, leads to a notch effect which makes it possible to precisely break the glass using pressure, tensile or bending load in a controlled manner. Using centuries-old church windows, the glass processor illustrated the possibilities of restoring such as reconstructing partly destroyed glass paintings, protective glazing, to safeguard the paintings agains contamination from candle soot, or mending lead glazing. In lead glazing, colored pieces of glass are framed with lead cames which are then soldered with tin. In earlier days, before it was possible to produce large panels of glass, this was the way to manufacture windows. The engineering students were particularly impressed by the fact that the technique of lead glazing has stood the test of time without any mentionable innovations.