I've experimented with my 3d printer by attaching a wire connected to a capacitor bank to the tool head. I can cut (with low accuracy) metal foil that's connect

I've experimented with my 3d printer by attaching a wire connected to a capacitor bank to the tool head. I can cut (with low accuracy) metal foil that's connected to the other end of the capacitor bank this way, I never did more experiments with it.