{
  "version": "0.1",
  "nodes": {
    "1": { "id": 1, "name": "plate-cube", "op": { "type": "Cube", "size": { "x": 80, "y": 80, "z": 6 } } },
    "2": { "id": 2, "name": "plate-centered-xy", "op": { "type": "Translate", "child": 1, "offset": { "x": -40, "y": -40, "z": 0 } } },
    "3": { "id": 3, "name": "center-hole", "op": { "type": "Cylinder", "radius": 6, "height": 10, "segments": 32 } },
    "4": { "id": 4, "name": "corner-hole-base", "op": { "type": "Cylinder", "radius": 3, "height": 10, "segments": 32 } },
    "5": { "id": 5, "name": "corner-hole-+30+30", "op": { "type": "Translate", "child": 4, "offset": { "x": 30, "y": 30, "z": 0 } } },
    "6": { "id": 6, "name": "corner-hole-+30-30", "op": { "type": "Translate", "child": 4, "offset": { "x": 30, "y": -30, "z": 0 } } },
    "7": { "id": 7, "name": "corner-hole--30+30", "op": { "type": "Translate", "child": 4, "offset": { "x": -30, "y": 30, "z": 0 } } },
    "8": { "id": 8, "name": "corner-hole--30-30", "op": { "type": "Translate", "child": 4, "offset": { "x": -30, "y": -30, "z": 0 } } },
    "9": { "id": 9, "name": "holes-union-1", "op": { "type": "Union", "left": 3, "right": 5 } },
    "10": { "id": 10, "name": "holes-union-2", "op": { "type": "Union", "left": 9, "right": 6 } },
    "11": { "id": 11, "name": "holes-union-3", "op": { "type": "Union", "left": 10, "right": 7 } },
    "12": { "id": 12, "name": "holes-union-4", "op": { "type": "Union", "left": 11, "right": 8 } },
    "13": { "id": 13, "name": "plate-with-holes", "op": { "type": "Difference", "left": 2, "right": 12 } }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    { "root": 13, "material": "default" }
  ]
}