Traditional stained glass uses lead came, long strips of lead shaped into an H or a U. Colored glass is cut to the shape of a pattern and laid out on a design cartoon. The contours of each segment are fitted into strips of lead came. The joints of each came are then soldered to one another, securing the entire panel. Putty is inserted between the glass and the came for waterproofing. Once cleaned of dried putty, the panel is ready for installation.