{
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    "105": {"id": 105, "name": "h_8_0", "op": {"type": "Translate", "child": 11, "offset": {"x": 8, "y": 0, "z": 0}}},
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    "201": {"id": 201, "name": "u2", "op": {"type": "Union", "left": 200, "right": 102}},
    "202": {"id": 202, "name": "u3", "op": {"type": "Union", "left": 201, "right": 103}},
    "203": {"id": 203, "name": "u4", "op": {"type": "Union", "left": 202, "right": 104}},
    "204": {"id": 204, "name": "u5", "op": {"type": "Union", "left": 203, "right": 105}},
    "205": {"id": 205, "name": "u6", "op": {"type": "Union", "left": 204, "right": 106}},
    "206": {"id": 206, "name": "u7", "op": {"type": "Union", "left": 205, "right": 107}},
    "207": {"id": 207, "name": "all_holes", "op": {"type": "Union", "left": 206, "right": 108}},

    "300": {"id": 300, "name": "result", "op": {"type": "Difference", "left": 2, "right": 207}}
  },
  "materials": {},
  "part_materials": {},
  "roots": [{"root": 300, "material": "default"}]
}