Very ambitious work is possible using colored flashed glass. The flashed layer can be processed by etching with hydrofluoric acid. The Lamberts glassworks in Waldsassen in the Upper Palatinate produces it in high quality and with a wide range. I use this glass in all my work. There is no substitute for it, anywhere in the world. My projects could not have been realized without the glass from Waldsassen.
Karl Heinz Traut, Artist