{
  "type": "minecraft:crafting_shaped",
  "pattern": [
    "CCC",
    "CBC",
    "CFC"
  ],
  "key": {
    "C": [
      {
        "tag": "forge:sheets/steel"
      }
    ],
    "F": [
      {
        "item": "minecraft:blast_furnace"
      }
    ],
    "B": [
      {
        "item": "immersive_aircraft:boiler"
      }
    ]
  },
  "result": {
    "item": "immersive_aircraft:steel_boiler"
  }
}