Using Copper Foil or Lead Came for Stained Glass Using the Stained Glass Copper Foil Technique is a fun way to add a bit of interest to your glass art project. But before you dive in, you should be prepared with the basics of the technique. Lead or Copper Foil? You can use lead or copper foil for stained glass to achieve artistic additions to your art piece, however, you should be aware that not all designs lend themselves to these two…