Structural architectural glass GENUINE RONDELS

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The glazing of windows with round disks of glass called Rondels was widely used in the town houses of bourgeois families and other secular buildings during the Middle Ages. Today you can find Rondels incorporated into the windows of buildings in many old cities and in sensitively restored edifices. Genuine Rondels are produced one at a time, by Glashütte Lamberts in the traditional method of blowing glass by mouth. This gives every Rondel a breath of life and brilliance that brings quality and makes every piece a unique work. That is what clearly distinguishes a blown Rondel from the “imitation” Rondel produced by means of pressing or spinning. After reheating, it is cut open by means of a pair of special scissors. In order to be able to handle the glass more easily and to achieve a better stability the master turns down the rim through a special technique. As the master continually rotates the punty rod a small round Rondel takes shape. After reaching the final size the Rondel is tapped off the punty rod and slowly cooled in an oven. The molten glass is taken from the oven by means of the blowpipe. The quantity of glass is related to the desired finished size of the Rondel. It is then blown into to a small balloon the volume of which is second in importance as to the size. The creation of a uniform Rondel of high quality is finally dependent on the master’s craftsmanship and know-how. Still hot, the small balloon of glass is now stuck onto a punty rod and knocked off the blowpipe.