What Happens When You Pour Molten Copper Into A Coconut

What happens when you pour molten copper into a coconut

Turns out, the hard shell of a coconut is really, really good at trapping the heat of the molten copper! Because once you fill up the little brown ball with the molten copper, it stays hot forever and brings everything to a boil. What do you get left with once it all cools down? This doughnut shaped lug of copper.

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