{
  "version": "0.1",
  "nodes": {
    "1": { "id": 1, "name": "BlockCube", "op": { "type": "Cube", "size": { "x": 60, "y": 60, "z": 10 } } },
    "2": { "id": 2, "name": "BlockCentered", "op": { "type": "Translate", "child": 1, "offset": { "x": -30, "y": -30, "z": 0 } } },

    "3": { "id": 3, "name": "HoleCylinder", "op": { "type": "Cylinder", "radius": 2.5, "height": 10, "segments": 32 } },

    "4": { "id": 4, "name": "HolePos0",   "op": { "type": "Translate", "child": 3, "offset": { "x": 20, "y": 0, "z": 0 } } },
    "5": { "id": 5, "name": "HolePos45",  "op": { "type": "Translate", "child": 3, "offset": { "x": 14.1421, "y": 14.1421, "z": 0 } } },
    "6": { "id": 6, "name": "HolePos90",  "op": { "type": "Translate", "child": 3, "offset": { "x": 0, "y": 20, "z": 0 } } },
    "7": { "id": 7, "name": "HolePos135", "op": { "type": "Translate", "child": 3, "offset": { "x": -14.1421, "y": 14.1421, "z": 0 } } },
    "8": { "id": 8, "name": "HolePos180", "op": { "type": "Translate", "child": 3, "offset": { "x": -20, "y": 0, "z": 0 } } },
    "9": { "id": 9, "name": "HolePos225", "op": { "type": "Translate", "child": 3, "offset": { "x": -14.1421, "y": -14.1421, "z": 0 } } },
    "10": { "id": 10, "name": "HolePos270", "op": { "type": "Translate", "child": 3, "offset": { "x": 0, "y": -20, "z": 0 } } },
    "11": { "id": 11, "name": "HolePos315", "op": { "type": "Translate", "child": 3, "offset": { "x": 14.1421, "y": -14.1421, "z": 0 } } },

    "12": { "id": 12, "name": "HolesUnion1", "op": { "type": "Union", "left": 4, "right": 5 } },
    "13": { "id": 13, "name": "HolesUnion2", "op": { "type": "Union", "left": 12, "right": 6 } },
    "14": { "id": 14, "name": "HolesUnion3", "op": { "type": "Union", "left": 13, "right": 7 } },
    "15": { "id": 15, "name": "HolesUnion4", "op": { "type": "Union", "left": 14, "right": 8 } },
    "16": { "id": 16, "name": "HolesUnion5", "op": { "type": "Union", "left": 15, "right": 9 } },
    "17": { "id": 17, "name": "HolesUnion6", "op": { "type": "Union", "left": 16, "right": 10 } },
    "18": { "id": 18, "name": "HolesUnion7", "op": { "type": "Union", "left": 17, "right": 11 } },

    "19": { "id": 19, "name": "BlockWithHoles", "op": { "type": "Difference", "left": 2, "right": 18 } }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    { "root": 19, "material": "default" }
  ]
}