I have 10 bins in my basement of antiquated pc equipment i would like to recover the metals from. I want to get the gold, silver, and copper if possible. I am not sure which route to take. I do have a foundry at home that I can easily incinerate the boards in with everything on them. Just cut them smaller to fit in a steel crucible and were golden. The other option is the vinegar and salt method. I will still cut them up to fit in a 5 gallon bucket and put a bubbler in them to keep it moving. Leave it sit for a few weeks. The question I have is I know the gold will not dissolve with that combination. How do i go about recovering the copper and silver from the solution after i get all gold and solids out of it? That is escaping me. If i drop copper in there it will just dissolve and not drop out any metals. Thanks