{
  "type": "create:mechanical_crafting",
  "acceptMirrored": true,
  "key": {
    "I": {
      "tag": "createbigcannons:ingot_iron"
    },
    "P": {
      "item": "create:fluid_pipe"
    },
    "S": {
      "tag": "minecraft:wooden_slabs"
    }
  },
  "pattern": [
    " I ",
    "IPI",
    "IPI",
    " S "
  ],
  "result": {
    "item": "createbigcannons:fluid_shell"
  }
}