{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "plate_cube",
      "op": {
        "type": "Cube",
        "size": { "x": 50, "y": 30, "z": 10 }
      }
    },
    "2": {
      "id": 2,
      "name": "plate_positioned",
      "op": {
        "type": "Translate",
        "child": 1,
        "offset": { "x": -25, "y": -15, "z": 0 }
      }
    },
    "3": {
      "id": 3,
      "name": "hole_cylinder",
      "op": {
        "type": "Cylinder",
        "radius": 1.5,
        "height": 10,
        "segments": 32
      }
    },
    "4": {
      "id": 4,
      "name": "hole_tr",
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": { "x": 20, "y": 10, "z": 0 }
      }
    },
    "5": {
      "id": 5,
      "name": "hole_br",
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": { "x": 20, "y": -10, "z": 0 }
      }
    },
    "6": {
      "id": 6,
      "name": "hole_tl",
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": { "x": -20, "y": 10, "z": 0 }
      }
    },
    "7": {
      "id": 7,
      "name": "hole_bl",
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": { "x": -20, "y": -10, "z": 0 }
      }
    },
    "8": {
      "id": 8,
      "name": "union_right_holes",
      "op": {
        "type": "Union",
        "left": 4,
        "right": 5
      }
    },
    "9": {
      "id": 9,
      "name": "union_left_holes",
      "op": {
        "type": "Union",
        "left": 6,
        "right": 7
      }
    },
    "10": {
      "id": 10,
      "name": "all_holes",
      "op": {
        "type": "Union",
        "left": 8,
        "right": 9
      }
    },
    "11": {
      "id": 11,
      "name": "plate_with_holes",
      "op": {
        "type": "Difference",
        "left": 2,
        "right": 10
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    { "root": 11, "material": "default" }
  ]
}