{
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    "2": {"id": 2, "name": "cyl_base2", "op": {"type": "Cylinder", "radius": 10, "height": 30, "segments": 64}},
    "3": {"id": 3, "name": "cyl_base3", "op": {"type": "Cylinder", "radius": 10, "height": 30, "segments": 64}},
    "4": {"id": 4, "name": "cyl_top", "op": {"type": "Translate", "child": 1, "offset": {"x": 0.0, "y": 11.547005, "z": 0.0}}},
    "5": {"id": 5, "name": "cyl_left", "op": {"type": "Translate", "child": 2, "offset": {"x": -10.0, "y": -5.7735025, "z": 0.0}}},
    "6": {"id": 6, "name": "cyl_right", "op": {"type": "Translate", "child": 3, "offset": {"x": 10.0, "y": -5.7735025, "z": 0.0}}},
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    "8": {"id": 8, "name": "u2", "op": {"type": "Union", "left": 7, "right": 6}}
  },
  "materials": {},
  "part_materials": {},
  "roots": [{"root": 8, "material": "default"}]
}