{
  "version": "0.1",
  "nodes": {
    "1": { "id": 1, "name": "cube_raw", "op": {"type":"Cube", "size":{"x":40,"y":40,"z":40}} },
    "2": { "id": 2, "name": "cube", "op": {"type":"Translate", "child":1, "offset":{"x":-20,"y":-20,"z":0}} },
    "3": { "id": 3, "name": "pocket_raw", "op": {"type":"Cube", "size":{"x":20,"y":20,"z":10}} },
    "4": { "id": 4, "name": "pocket", "op": {"type":"Translate", "child":3, "offset":{"x":-10,"y":-10,"z":30}} },
    "5": { "id": 5, "name": "result", "op": {"type":"Difference", "left":2, "right":4} }
  },
  "materials": {},
  "part_materials": {},
  "roots": [{ "root": 5, "material": "default" }]
}