The large motherboard CPU chip head sinks my local CMC yard only wants to pay me 28c /lb for whole under "brass refinery" catagory. I figured these would be the same as cu/al ac coils clean. Said if I cut the fins off, it would be #2 copper. I tried to argue that there is zero steel on these, and they didnt seem to care. The round ones I can press the chunk of copper out of that weighs about 1/3lb and get #1 probably. Name: copper heat sinks.jpg Views: 1516 Size: 117.7 KB