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

{
  "type": "minecraft:crafting_shapeless",
  "category": "misc",
  "ingredients": [
    {
      "item": "minecraft:iron_ingot"
    },
    {
      "item": "superbwarfare:hammer"
    }
  ],
  "result": {
    "item": "superbwarfare:iron_powder",
    "count": 1
  }
}