vlakglasgietenLater glass was drawn: a metal bar is dipped into the molten mass, raised and allowed to solidify the syrup. You get erratic, striped glass that irregular breaks the image. This production was later combined with rollers and improved.

Glass casting
As of 1952, the lighter molten glass was poured onto a bath of molten tin (0.4 to 25 mm) and cooled. So you get perfectly smooth plates.