{
  "version": "0.1",
  "nodes": {
    "1": { "id": 1, "name": "bottom_plate", "op": { "type": "Cube", "size": { "x": 30, "y": 40, "z": 4 } } },
    "2": { "id": 2, "name": "left_wall_cube", "op": { "type": "Cube", "size": { "x": 4, "y": 40, "z": 26 } } },
    "3": { "id": 3, "name": "left_wall", "op": { "type": "Translate", "child": 2, "offset": { "x": 0, "y": 0, "z": 4 } } },
    "4": { "id": 4, "name": "right_wall_cube", "op": { "type": "Cube", "size": { "x": 4, "y": 40, "z": 26 } } },
    "5": { "id": 5, "name": "right_wall", "op": { "type": "Translate", "child": 4, "offset": { "x": 26, "y": 0, "z": 4 } } },
    "6": { "id": 6, "name": "union_bottom_left", "op": { "type": "Union", "left": 1, "right": 3 } },
    "7": { "id": 7, "name": "u_channel_bracket", "op": { "type": "Union", "left": 6, "right": 5 } }
  },
  "materials": {},
  "part_materials": {},
  "roots": [{ "root": 7, "material": "default" }]
}