{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "plate_base",
      "op": { "type": "Cube", "size": { "x": 50, "y": 30, "z": 10 } }
    },
    "2": {
      "id": 2,
      "name": "plate_centered",
      "op": { "type": "Translate", "child": 1, "offset": { "x": -25, "y": -15, "z": 0 } }
    },
    "3": {
      "id": 3,
      "name": "hole_cyl",
      "op": { "type": "Cylinder", "radius": 1.5, "height": 10, "segments": 32 }
    },
    "4": {
      "id": 4,
      "name": "hole_ne",
      "op": { "type": "Translate", "child": 3, "offset": { "x": 20, "y": 10, "z": 0 } }
    },
    "5": {
      "id": 5,
      "name": "hole_nw",
      "op": { "type": "Translate", "child": 3, "offset": { "x": -20, "y": 10, "z": 0 } }
    },
    "6": {
      "id": 6,
      "name": "hole_se",
      "op": { "type": "Translate", "child": 3, "offset": { "x": 20, "y": -10, "z": 0 } }
    },
    "7": {
      "id": 7,
      "name": "hole_sw",
      "op": { "type": "Translate", "child": 3, "offset": { "x": -20, "y": -10, "z": 0 } }
    },
    "8": {
      "id": 8,
      "name": "holes_union_a",
      "op": { "type": "Union", "left": 4, "right": 5 }
    },
    "9": {
      "id": 9,
      "name": "holes_union_b",
      "op": { "type": "Union", "left": 6, "right": 7 }
    },
    "10": {
      "id": 10,
      "name": "holes_union",
      "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" }]
}