{
  "saved_at_utc": "2026-06-22T12:04:44.959053+00:00",
  "stage": "stage_2_view_selection",
  "provider": "openrouter",
  "model": "qwen/qwen3-vl-30b-a3b-instruct",
  "llm_data": {
    "assembly_info": {
      "title": "Recuperator_grid",
      "description": "A cylindrical heat exchanger with flanged ends and internal flow channels, designed to control volume flow and maintain consistent temperature across different fluid paths.",
      "material": "Stainless Steel"
    },
    "selected_views": [
      {
        "type": "Front",
        "reason": "Provides the primary orthographic view showing the overall height, flange dimensions, and the position of the side ports and internal structure."
      },
      {
        "type": "Top",
        "reason": "Reveals the circular flange with bolt holes and the central internal structure, essential for understanding the mounting and flow pattern."
      },
      {
        "type": "Left",
        "reason": "Shows the side profile with the ports and internal channel, confirming the symmetry and internal feature alignment."
      },
      {
        "type": "Isometric",
        "reason": "Offers a 3D perspective to clearly visualize the entire assembly, including the flanges, ports, and internal geometry."
      }
    ],
    "section_views": [
      {
        "symbol": "A",
        "normal": [
          0,
          1,
          0
        ],
        "origin": [
          0.0,
          0.0,
          0.0
        ],
        "reason": "Reveals the internal flow channels and wall thickness, critical for understanding the fluid path and structural integrity."
      }
    ],
    "detail_views": [
      {
        "reference": "B",
        "base_view": "Front",
        "anchor": [
          0.0,
          0.0,
          0.0
        ],
        "radius": 15,
        "reason": "Magnifies the internal flow channel and port connections to clearly show the diameter and alignment of the fluid passages."
      }
    ],
    "dimensions": {
      "Front": [
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 593.6,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 148.3,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "linear_distance",
          "dim_type": "Distance",
          "match_strategy": "nearest_edge_pair",
          "value_approx": 200,
          "placement": "left",
          "offset_index": 2,
          "tolerance": null
        }
      ],
      "Top": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 148.3,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "bolt_pattern",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "circle_a": {
            "location_3d": [
              0,
              0,
              0
            ],
            "radius_approx": 74.13
          },
          "circle_b": {
            "location_3d": [
              0,
              0,
              0
            ],
            "radius_approx": 50
          },
          "value_approx": 100,
          "tolerance": null,
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Left": [
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 593.6,
          "placement": "right",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 148.3,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Isometric": [
        {
          "type": "overall_width",
          "dim_type": "DistanceX",
          "match_strategy": "extreme_vertices_x",
          "value_approx": 170.0,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "overall_height",
          "dim_type": "DistanceY",
          "match_strategy": "extreme_vertices_y",
          "value_approx": 593.6,
          "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
          ],
          "value_approx": 10,
          "placement": "left",
          "offset_index": 1,
          "tolerance": null
        },
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 100,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        }
      ],
      "Detail B": [
        {
          "type": "diameter",
          "dim_type": "Diameter",
          "match_strategy": "nearest_circle",
          "location_3d": [
            0,
            0,
            0
          ],
          "value_approx": 20,
          "tolerance": "H7",
          "placement": "leader",
          "offset_index": 1
        },
        {
          "type": "linear_distance",
          "dim_type": "Distance",
          "match_strategy": "nearest_edge_pair",
          "value_approx": 50,
          "placement": "below",
          "offset_index": 1,
          "tolerance": null
        }
      ]
    }
  }
}