Cleaning Leadlight Glass Clean each piece of glass separately. Spray some cleaner onto a cloth – not directly onto the window. As all glass cleaners leave streaks, ensure that you polish each piece with a dry rag that has a small amount of whiting dabbed onto it.Click to see full answer. In this way, how do you repair Leadlight Windows? Install new glass and cames Cut out lead cames. Using side-cutting pliers, snip the lead came at the soldered joints at each end of the section containing the broken glass. Take out the glass. Clean lead cames. Replace glass. Polish the metal. Solder the joints. Similarly, how do you clean lead come? All lead came should be clean and shiny before soldering begins. If lead is not shiny, use a soft wire brush on all joints to remove any oxidation. Plug in your soldering iron and let it warm up for 5 minutes. Next, use a small paint brush to apply flux (liquid or paste) on each joint. Just so, how do you clean old glass windows? Use a natural sponge and a stiff-bristle brush to clean individual panes of glass. A modest squirt of mild dish soap in a pail of warm water helps loosen dirt without leaving soap film on the glass. Pull a small squeegee from top to bottom down each pane, wiping it on a clean rag between each stroke to clear the glass.How do you remove oxidized stained glass? How to Clean Oxidized Glass Wring out a cleaning rag in warm water, and apply a little of your chosen oxidization removal product to an inconspicuous part of the window. Apply your oxidization removal product to the stained areas of the window. Wash the window thoroughly with warm soapy water.