{
  "type": "minecraft:crafting_shaped",
  "category": "redstone",
  "key": {
    "B": "minecraft:blaze_rod",
    "C": "minecraft:exposed_copper",
    "R": "minecraft:redstone"
  },
  "pattern": [
    " C ",
    "CBC",
    " R "
  ],
  "result": {
    "count": 4,
    "id": "minecraft:exposed_copper_bulb"
  }
}