{
  "variants":
  {
    "half=top,metal=iron": { "model": "substratum:slabTopIron" },
    "half=top,metal=gold": { "model": "substratum:slabTopGold" },
    "half=top,metal=copper": { "model": "substratum:slabTopCopper" },
    "half=top,metal=tin": { "model": "substratum:slabTopTin" },
    "half=top,metal=bronze": { "model": "substratum:slabTopBronze" },
    "half=top,metal=electrum": { "model": "substratum:slabTopElectrum" },
    "half=top,metal=invar": { "model": "substratum:slabTopInvar" },
    "half=top,metal=nickel": { "model": "substratum:slabTopNickel" },
    "half=bottom,metal=iron": { "model": "substratum:slabBottomIron" },
    "half=bottom,metal=gold": { "model": "substratum:slabBottomGold" },
    "half=bottom,metal=copper": { "model": "substratum:slabBottomCopper" },
    "half=bottom,metal=tin": { "model": "substratum:slabBottomTin" },
    "half=bottom,metal=bronze": { "model": "substratum:slabBottomBronze" },
    "half=bottom,metal=electrum": { "model": "substratum:slabBottomElectrum" },
    "half=bottom,metal=invar": { "model": "substratum:slabBottomInvar" },
    "half=bottom,metal=nickel": { "model": "substratum:slabBottomNickel" }
  }
}

