This may sound like a dumb question, and maybe it is. Would like a knowledgeable response(s) anyway.
Is there a difference between copper wire, say taken out of an electrical cord, and copper wire specifically spooled for fly tying?

A post under the thread about materials gotten during the holiday season reminded me about something. That is, I recall hearing(reading?) years ago that the spooled copper wire we use for fly tying has been treated to slow down oxidation whereas the copper wire taken from an electrical cord has not been treated. Anyone know about this or is it just an 'urban legend'?

Allan