{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "main_block",
      "op": {"type": "Cube", "size": {"x": 50, "y": 30, "z": 20}}
    },
    "2": {
      "id": 2,
      "name": "main_block_centered",
      "op": {"type": "Translate", "child": 1, "offset": {"x": -25, "y": -15, "z": 0}}
    },
    "3": {
      "id": 3,
      "name": "cut_block",
      "op": {"type": "Cube", "size": {"x": 25, "y": 30, "z": 10}}
    },
    "4": {
      "id": 4,
      "name": "cut_block_positioned",
      "op": {"type": "Translate", "child": 3, "offset": {"x": 0, "y": -15, "z": 10}}
    },
    "5": {
      "id": 5,
      "name": "stepped_block",
      "op": {"type": "Difference", "left": 2, "right": 4}
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [{"root": 5, "material": "default"}]
}