{
  "type": "minecraft:crafting_shaped",
  "key": {
    "G": {
      "tag": "forge:glass"
    },
    "M": {
      "tag": "forge:ingots/iron"
    },
    "S": {
      "item": "ironchest:copper_chest"
    }
  },
  "pattern": [
    "MGM",
    "GSG",
    "MGM"
  ],
  "result": {
    "item": "ironchest:iron_chest"
  }
}