How to combine digitizer and glass?

you have to seperate the old digitizer from the lcd panel with heath and very thin piano witre or a comercial grade seperatetor you bettter off buying a screeen and digitizer already together new and a frame easiest way to fix it or ya can tray seperating the digitizer from the frame if ya get a scren and digitizer in one unit withotu frame but thwe 2013 frames crack very easy compared to the first generation nexus 7s