superb-warfare/src/main/resources/data/superbwarfare/recipes/propeller_crafting.json

{
  "type": "minecraft:crafting_shaped",
  "category": "misc",
  "pattern": [
    " a ",
    "aba",
    " a "
  ],
  "key": {
    "a": {
      "tag": "minecraft:planks"
    },
    "b": {
      "item": "minecraft:iron_nugget"
    }
  },
  "result": {
    "item": "superbwarfare:propeller",
    "count": 2
  }
}