{
  "version": "0.1",
  "nodes": {
    "1": {"id": 1, "name": "big_cylinder", "op": {"type": "Cylinder", "radius": 25.0, "height": 40.0, "segments": 64}},
    "2": {"id": 2, "name": "small_cylinder", "op": {"type": "Cylinder", "radius": 5.0, "height": 40.0, "segments": 32}},
    "3": {"id": 3, "name": "small_translated", "op": {"type": "Translate", "child": 2, "offset": {"x": 30.0, "y": 0.0, "z": 0.0}}},
    "4": {"id": 4, "name": "union", "op": {"type": "Union", "left": 1, "right": 3}}
  },
  "materials": {},
  "part_materials": {},
  "roots": [{"root": 4, "material": "default"}]
}