I pulled the transformer out of a printer cord. I thought everyone was talking about something completely different than the brick with copper wrapped around inside it. I wasn't gonna bother with the copper, but then it hit me that I could have left the whole thing alone and sold the entire cord, transformer and all, as insulated at my local yard. Transformer price is a lot less than insulated wire, so I was a little mad. Just a reminder, don't pull out the transformer if you don't bother taking the copper off and your yard will pay for the whole thing as insulated.
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