My (cheapo rat shack) headphones started to crackle a bit when I jiggled the cord a little, so I decided to sacrafice a very old pair of cans that don't work anymore and use that cord instead. Problem is, these cheapo cans use cheapo wires. The wires are basically made by using two strings of raw actual conducting material. Then, they put on some kind of coating on each string so they don't short out when they are both in the same piece of the bigger insulation that holds the wires together. Once you cut the wires, you have to get off some of the coating stuff on the conducting material before you put it back together again. Problem is, I can't figure out the best way to go about doing this. I figured the best way would be to heat the strings of conducting material until the coating stuff melted off, but I don't even know what it is so I'm not sure that would work.