I've seen a number of different ways to remove gold from boards etc, but I'm going to try vinegar, salt and hydrogen peroxide, as it's all cheap and relatively safe. My question is, does it matter what the material is- plastic connectors with gold pins inside, chips, ribbon cable ends, gold fingers on boards? I've got about 6 different kinds, there's even gold in some kind of part attached to some carburetors, encased in plastic. I'd like to just chuck it all in together, but I've seen so many different methods including grinding everything up and heating it in furnace, boards, chips and all. Any advice?