I am reading on forum for over 2 months, and I learnd a lot. Still reading Hoke's book than I will try process my scrap. But I found on youtube some gold stripping solution, any idea what could it be?
http://www.youtube.com/watch?v=lfpuF7nBX60
http://www.youtube.com/watch?v=lfpuF7nBX60