On #2 it's going to depend on what price you can get for the copper once it's been separated. In my experience, with the price I could get, it's not worth the time to remove the metal tops.
It's worth noting that the metal tops sometimes contain precious metal too and, while it's not much per chip, Boardsort undoubtedly handles so many of these that, whatever refiner eventually gets them, they knows there is value there too. This helps Boardsort set a price that generally makes it worth your while not to completely breakdown everything.
That being said, you may be close enough to a scrap yard that pays more for these metal tops and it may be worth your time. You may have to do it once to see if it's actually beneficial or if you should spend that time doing something else.
_________________ Here to learn more so I can recycle more My grades are my own opinion and not an official grade from Boardsort
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