Scaled RC stuff can be cool, I see these old guys at the park with their RC sail boats (about 18=24 inches long) and I think to myself "Self, I'd love an RC "Monitor, or Merimac" with real guns so I could go sink those silly sail boats."
His casting is reckless, zinc gives off some nasty fumes when heated anywhere near melting. He should have been outside or in a highly ventilated area, not the basement.