{
  "type": "minecraft:crafting_shaped",
  "key": {
    "/": {
      "tag": "forge:ingots/iron"
    },
    "i": {
      "tag": "minecraft:slabs"
    },
    "f": {
      "item": "minecraft:blast_furnace"
    },
    "b": {
      "item": "minecraft:brick"
    }
  },
  "pattern": [
    "bib",
    "bfb",
    "/f/"
  ],
  "result": {
    "item": "silentgear:metal_alloyer"
  }
}