The kitchen microwave foundry

What, like you didn't totally get a kick out of microwaving foil when you were a kid? Well, now you're all grown up,
so it's time your juvenile misuse of radiation does too. How does turning that unmodified kitchen microwave into a foundry for earth metals like iron, bronze, silver, and white metal sound to you? Trust us, you're as ready to melt things to 1000° Celsius as you'll ever be, so get to work making your sweetheart a custom 24k gold Engadget pendant in the old nuke-box already, okay?

P.S. – We're not even going to touch the physics of this, so we're just going to assume it's fake and leave it at that.