How to take out the copper wire in the wire conveniently and quickly?

If it is aluminum wire, it is leather. If it is copper wire, it is easier to burn, but it is much cheaper to sell than peeled metal wire. It is more cost-effective to peel with a knife, but it is too slow. You can bake it with fire, then pull it with your hand and the copper wire will come out. That's the degree of baking. Just try more. By the way, use gloves. It's not easy to pull out after baking for a long time.