A membership will provide inspiration, ideas, and guidance to your door every month. On a modest scale, broken or fractured glass can be replaced by folding back the flanges of the cames, inserting new pieces, and re-sealing. To fix damaged glass in leaded lamps, lead or copper strips are sometimes used instead. These are sold by glass makers who supply commercial markets. The leads must be long enough to reach from the bottom of the frame to within 1/4 inch of the top. The old glass is removed with special tools so as not to break the frame, then the new piece is inserted into the opening and held in place while the flanges at the sides are folded down over it. There are several companies that sell replacement leaded glass panels. They are usually made of tempered safety glass and come in standard sizes for regular light bulbs. There are also special lenses available for use with mercury vapor lamps and fluorescent tubes. These lenses contain several layers that work together to reduce the amount of heat absorbed by the glass panel when exposed to the sun or ambient room temperatures. They also tend to be more translucent than regular clear glass panels so less electricity is needed to produce the same amount of light. Lensed glass should never be placed in direct contact with sunlight because this could cause damage or destruction to both the glass and the lens itself. Lenses also fade with time if they are exposed to intense sunlight or ultraviolet light from the sun.