{
  "variants":
  {
    "half=top,metal=zinc": { "model": "substratum:slabDoubleZinc" },
    "half=top,metal=brass": { "model": "substratum:slabDoubleBrass" },
    "half=top,metal=silver": { "model": "substratum:slabDoubleSilver" },
    "half=top,metal=steel": { "model": "substratum:slabDoubleSteel" },
    "half=top,metal=lead": { "model": "substratum:slabDoubleLead" },
    "half=top,metal=platinum": { "model": "substratum:slabDoublePlatinum" },
    "half=top,metal=cupronickel": { "model": "substratum:slabDoubleCupronickel"  },
    "half=bottom,metal=signalum": { "model": "substratum:slabDoubleSignalum"  },
    "half=bottom,metal=zinc": { "model": "substratum:slabDoubleZinc" },
    "half=bottom,metal=brass": { "model": "substratum:slabDoubleBrass" },
    "half=bottom,metal=silver": { "model": "substratum:slabDoubleSilver" },
    "half=bottom,metal=steel": { "model": "substratum:slabDoubleSteel" },
    "half=bottom,metal=lead": { "model": "substratum:slabDoubleLead" },
    "half=bottom,metal=platinum": { "model": "substratum:slabDoublePlatinum" },
    "half=bottom,metal=cupronickel": { "model": "substratum:slabDoubleCupronickel"  },
    "half=bottom,metal=signalum": { "model": "substratum:slabDoubleSignalum"  }
  }
}

