{
  "version": "0.1",
  "nodes": {
    "1": { "id": 1, "name": "TruncatedCone", "op": {"type":"Cone", "radius_bottom":20, "radius_top":10, "height":30, "segments":32} }
  },
  "materials": {},
  "part_materials": {},
  "roots": [{ "root": 1, "material": "default" }]
}