copper_nugget_from_copper_ingot.json

{
  "type": "minecraft:crafting_shapeless",
  "group": "tmechworks:copper_nugget",
  "ingredients": [
    {
      "item": "tmechworks:copper_ingot"
    }
  ],
  "result": {
    "item": "tmechworks:copper_nugget",
    "count": 9
  }
}