Leaded glass is typically considered to be the more traditional method of joining pieces of cut art glass. This method consists of fitting cut pieces of glass with-in pieces of came and soldering the joints where they meet. There are many different types, sizes and profiles of came used in the construction of windows, panels, door inserts, boxes, vases etc. Came is often made of different metals or combination of metals such as lead, zinc, copper and brass. Choosing the type of came for a project is often based on the size, complexity and the intended use of the finished product.
During the construction phase of windows, door inserts and panels, cement is often forced between the glass and came and allowed to harden. Cement is used to help seal the glass panel making the window both air tight as well as waterproof. Another benefit of adding cement is that it adds tremendous rigidity and strength to the window and stops the glass from rattling in the came channel. It is a very messy, time consuming step in window construction but well worth the extra work.
Some glass craftsman choose to use putty instead of cement which allows easier window repair in the future and construction is a lot faster than using cement but provides little in the area of strengthening the panel.
Even with good design and construction techniques reinforcement (supports) for larger panels is critical. There are many different methods to reinforce a panel and the chosen technique is often based on the size of the panel and the intended use of the panel. Many times it is possible to hide the supports right in the design and construction of the panel/window.
Windows built using the best materials and quality workmanship will last for many years.