aluminum_ingot_from_nuggets.json

{
  "type": "minecraft:crafting_shaped",
  "group": "aluminum_ingot",
  "pattern": [
    "###",
    "###",
    "###"
  ],
  "key": {
    "#": {
      "item": "tmechworks:aluminum_nugget"
    }
  },
  "result": {
    "item": "tmechworks:aluminum_ingot"
  }
}