{
  "variants":
  {
    "half=top,metal=iron": { "model": "substratum:slabDoubleIron" },
    "half=top,metal=gold": { "model": "substratum:slabDoubleGold" },
    "half=top,metal=copper": { "model": "substratum:slabDoubleCopper" },
    "half=top,metal=tin": { "model": "substratum:slabDoubleTin" },
    "half=top,metal=bronze": { "model": "substratum:slabDoubleBronze" },
    "half=top,metal=electrum": { "model": "substratum:slabDoubleElectrum" },
    "half=top,metal=invar": { "model": "substratum:slabDoubleInvar" },
    "half=top,metal=nickel": { "model": "substratum:slabDoubleNickel" },
    "half=bottom,metal=iron": { "model": "substratum:slabDoubleIron" },
    "half=bottom,metal=gold": { "model": "substratum:slabDoubleGold" },
    "half=bottom,metal=copper": { "model": "substratum:slabDoubleCopper" },
    "half=bottom,metal=tin": { "model": "substratum:slabDoubleTin" },
    "half=bottom,metal=bronze": { "model": "substratum:slabDoubleBronze" },
    "half=bottom,metal=electrum": { "model": "substratum:slabDoubleElectrum" },
    "half=bottom,metal=invar": { "model": "substratum:slabDoubleInvar" },
    "half=bottom,metal=nickel": { "model": "substratum:slabDoubleNickel" }
  }
}

