{
  "saved_at_utc": "2026-06-19T06:48:55.014439+00:00",
  "stage": "stage_2_view_selection",
  "provider": "openrouter",
  "model": "qwen/qwen3-vl-30b-a3b-instruct",
  "llm_data": {
    "assembly_info": {
      "title": "Slurry Pump Impeller",
      "description": "Upgraded impeller for slurry pumps, replacing PTFE with ceramic material for enhanced durability and resistance to abrasive fluids.",
      "material": "Ceramic"
    },
    "selected_views": [
      {
        "type": "Front",
        "reason": "Provides a clear view of the impeller's hub, blade profile, and overall height, essential for understanding the external geometry and mounting interface."
      },
      {
        "type": "Top",
        "reason": "Shows the circular arrangement of the blades and the central bore, critical for defining the impeller's rotational symmetry and shaft fit."
      },
      {
        "type": "Isometric",
        "reason": "Offers a 3D perspective that helps visualize the spatial relationship between the blades, hub, and overall shape, aiding in assembly and inspection."
      }
    ],
    "section_views": [
      {
        "symbol": "A",
        "normal": [
          0,
          1,
          0
        ],
        "origin": [
          0.0,
          0.0,
          40.4
        ],
        "reason": "Reveals the internal blade thickness, hub wall, and the transition between the hub and blades, which are not visible in external views."
      }
    ],
    "detail_views": [
      {
        "reference": "B",
        "base_view": "Front",
        "anchor": [
          0.0,
          0.0,
          80.9
        ],
        "radius": 10,
        "reason": "Magnifies the blade tip and leading edge to show the precise curvature and sharpness, critical for performance and wear resistance."
      }
    ],
    "dimensions": {
      "Front": [
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 80.9,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0.0,
            0.0,
            40.4
          ],
          "value_approx": 142.4,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0.0,
            0.0,
            0.0
          ],
          "value_approx": 50.0,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 2
        }
      ],
      "Top": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0.0,
            0.0,
            80.9
          ],
          "value_approx": 142.4,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0.0,
            0.0,
            80.9
          ],
          "value_approx": 50.0,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 2
        },
        {
          "type": "center_distance",
          "dim_type": "Distance",
          "match_strategy": "between_circles",
          "circle_a": {
            "location_3d": [
              0.0,
              0.0,
              80.9
            ],
            "radius_approx": 71.2
          },
          "circle_b": {
            "location_3d": [
              0.0,
              0.0,
              80.9
            ],
            "radius_approx": 25.0
          },
          "value_approx": 46.2,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        }
      ],
      "Isometric": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 284.8,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        }
      ],
      "Section A-A": [
        {
          "type": "wall_thickness",
          "dim_type": "Distance",
          "match_strategy": "nearest_parallel_edges",
          "location_3d": [
            0.0,
            0.0,
            40.4
          ],
          "value_approx": 10.0,
          "placement": "left",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0.0,
            0.0,
            40.4
          ],
          "value_approx": 50.0,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Detail B": [
        {
          "type": "radius",
          "dim_type": "Radius",
          "match_strategy": "nearest_arc",
          "location_3d": [
            0.0,
            0.0,
            80.9
          ],
          "value_approx": 5.0,
          "tolerance": null,
          "placement": "leader",
          "offset_index": 1
        }
      ]
    }
  }
}