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Paul
Lead strips called ‘cames' or ‘calmes' hold the pieces of glass together and, therefore, play a major structural role in the window. There is no general rule for how long lead cames last and medieval /emoticons/biggrin.png leading /emoticons/biggrin.png can often still be found in windows today. Like the glass, the /emoticons/biggrin.png leading /emoticons/biggrin.png can provide the conservator with significant information about the date of the window and techniques used. If the original /emoticons/biggrin.png leading /emoticons/biggrin.png has failed and needs to be replaced it should be carefully recorded and preserved. As the leading also contributes to the visual/aesthetic appearance of a window it is important to match the original width and profile when replacing the historical lead cames.
