{
  "version": "0.1",
  "nodes": {
    "1": { "id": 1, "name": "Base_Cube", "op": { "type": "Cube", "size": { "x": 50, "y": 30, "z": 5 } } },
    "2": { "id": 2, "name": "Base_Placement", "op": { "type": "Translate", "child": 1, "offset": { "x": -25, "y": -15, "z": 0 } } },

    "3": { "id": 3, "name": "Fin_Prim", "op": { "type": "Cube", "size": { "x": 50, "y": 3, "z": 15 } } },
    "4": { "id": 4, "name": "Fin_Ym10", "op": { "type": "Translate", "child": 3, "offset": { "x": -25, "y": -11.5, "z": 5 } } },
    "5": { "id": 5, "name": "Fin_Y0", "op": { "type": "Translate", "child": 3, "offset": { "x": -25, "y": -1.5, "z": 5 } } },
    "6": { "id": 6, "name": "Fin_Yp10", "op": { "type": "Translate", "child": 3, "offset": { "x": -25, "y": 8.5, "z": 5 } } },

    "7": { "id": 7, "name": "Union_Base_Fin1", "op": { "type": "Union", "left": 2, "right": 4 } },
    "8": { "id": 8, "name": "Union_Add_Fin2", "op": { "type": "Union", "left": 7, "right": 5 } },
    "9": { "id": 9, "name": "Union_Add_Fin3", "op": { "type": "Union", "left": 8, "right": 6 } }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    { "root": 9, "material": "default" }
  ]
}