Here's a demo with a Coca Cola can: https://www.youtube.com/watch?v=uQHFQoFoxvQ https://www.youtube.com/watch?v=uQHFQoFoxvQ Basically, you don't want any funny

Here's a demo with a Coca Cola can: https://www.youtube.com/watch?v=uQHFQoFoxvQ https://www.youtube.com/watch?v=uQHFQoFoxvQ Basically, you don't want any funny reactions with the metal.