I used to save the copper, give it to my friend to strip then we would split the money.
A couple of years ago I bought one of those "Big Bucks Wire Strippers". I didn't buy the power feed option but it works pretty well. The only thing is that once you get it set up for a certain size you had to stick to that size because adjusting it takes a little time. Once you got it adjusted it was like having a zipper on the coating. It worked really well on small wire (#12 & 10) left over on spools. We used it for up to 500MCM with no problems.
In one of the trade magazines some time ago, I saw an ad for a machine that would strip any size wire. You simply fed the wire in and it would spit out small copper pieces from one side and plastic coating on the other. Looked expensive.
