is all that this thread had taught me! My head was spinning all night trying to get around it. All my life I thought all lead was the same--the lead weight at the end of your fishing line, the lead they put on your wheel when your tires are balanced, even the lead apron they put on you at a dentists office when you get an Xray. Now I find out that the lead someone might use to repair a center drilled chip is a different material than what a chip manufacturer might use and each is easily seen in a Xray differently. I guess I will just have to wait for the video and learn more about it. I wonder how many others thought all lead was the same?