← mecheval / run / a3-hex-nut-01 / claude-mcp-claude-opus-4-7 / 20260611T181444Z-bc71

run 20260611T181444Z-bc71

a3-hex-nut-01 · claude-mcp-claude-opus-4-7

Summary

statusfail
score0.83 (5/6)
submissionself-run
modelclaude-mcp-claude-opus-4-7 (anthropic)
started2026-06-11T18:14:44.688Z
ended2026-06-11T18:15:34.263Z
tokens220,256 in · 2,712 out · 222,968 total
wallclock49.6s
tool calls16
task hash7a7b681fbc898d3a…
vcad hash956b1d0b16fe2fd3…

Prompt

Make a hexagonal nut. The outer cross-section is a regular hexagon with flat-to-flat distance 19mm (so 19mm wrench fits), oriented so two flats are parallel to the X axis (the top and bottom of the hex). Height 8mm along Z, base on the XY plane (z = 0 to z = 8). Concentric central through-hole of diameter 10mm, axis along Z. Output a single solid.

Checks

0
valid_solid
pass
params + details 
params: {
  "type": "valid_solid"
}

details: {
  "root_count": 1,
  "solids_produced": 1
}
1
bbox
fail
X off by -1.47mm
params + details 
params: {
  "type": "bbox",
  "min": [
    -10.97,
    -9.5,
    0
  ],
  "max": [
    10.97,
    9.5,
    8
  ],
  "tolerance_mm": 0.2
}

details: {
  "actual_max": [
    9.5,
    10.96969985961914,
    8
  ],
  "actual_min": [
    -9.5,
    -10.96969985961914,
    0
  ],
  "deviation_max": [
    -1.4700000000000006,
    1.4696998596191406,
    0
  ],
  "deviation_min": [
    1.4700000000000006,
    -1.4696998596191406,
    0
  ],
  "max_abs_deviation_mm": 1.4700000000000006,
  "tolerance_mm": 0.2
}
2
mass_props
pass
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 1872.62,
  "tolerance_pct": 1.5
}

details: {
  "volume": {
    "actual_mm3": 1873.7742694601573,
    "deviation_pct": 0.06163927866611303,
    "pass": true,
    "spec_mm3": 1872.62,
    "tolerance_pct": 1.5
  }
}
3
hole_count
pass
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 10,
  "expected": 1,
  "diameter_tolerance_mm": 0.1
}

details: {
  "actual": 1,
  "diameter_mm": 10,
  "diameter_tolerance_mm": 0.1,
  "expected": 1,
  "found": [
    [
      0,
      0,
      10
    ]
  ]
}
4
hole_positions
pass
params + details 
params: {
  "type": "hole_positions",
  "diameter_mm": 10,
  "positions": [
    [
      0,
      0,
      0
    ]
  ],
  "tolerance_mm": 0.15
}

details: {
  "diameter_mm": 10,
  "per_expected": [
    {
      "distance_mm": 0,
      "matched_hole": [
        0,
        0
      ],
      "pass": true,
      "spec_xy": [
        0,
        0
      ]
    }
  ],
  "tolerance_mm": 0.15,
  "unmatched_extras": []
}
5
step_roundtrip
pass
params + details 
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1.5
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          9.5,
          10.96969985961914,
          8
        ],
        "original_min": [
          -9.5,
          -10.96969985961914,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          9.5,
          10.96969985961914,
          8
        ],
        "roundtripped_min": [
          -9.5,
          -10.96969985961914,
          0
        ],
        "tolerance_mm": 0.45158153583723437
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0.10747182239181124,
        "original_mm3": 1873.7742694601573,
        "pass": true,
        "roundtripped_mm3": 1875.788048815055
      }
    }
  ],
  "tolerance_pct": 1.5
}

Tool calls

0
open_document
ok
2ms
args
{}
1
create_cad_loon
ok
11ms
args
{
  "source": "[difference\n  [translate 0 0 0 [cylinder 5 8]]\n  [extrude 0 0 8\n    [sketch 0 0 0  1 0 0  0 1 0\n      #[\n        [line 9.5 -5.4848 9.5 5.4848]\n        [line 9.5 5.4848 0 10.9697]\n        [line 0 10.9697 -9.5 5.4848]\n        [line -9.5 5.4848 -9.5 -5.4848]\n        [line -9.5 -5.4848 0 -10.9697]\n        [line 0 -10.9697 9.5 -5.4848]\n      ]\n    ]\n  ]\n]",
  "format": "json"
}
2
create
ok
8ms
args
{
  "document_id": "doc_1781201684859_1",
  "type": "sketch_2_d",
  "name": "Hex outline",
  "params": {
    "origin": {
      "x": 0,
      "y": 0,
      "z": 0
    },
    "x_dir": {
      "x": 1,
      "y": 0,
      "z": 0
    },
    "y_dir": {
      "x": 0,
      "y": 1,
      "z": 0
    },
    "segments": [
      {
        "type": "Line",
        "start": {
          "x": 9.5,
          "y": -5.4848
        },
        "end": {
          "x": 9.5,
          "y": 5.4848
        }
      },
      {
        "type": "Line",
        "start": {
          "x": 9.5,
          "y": 5.4848
        },
        "end": {
          "x": 0,
          "y": 10.9697
        }
      },
      {
        "type": "Line",
        "start": {
          "x": 0,
          "y": 10.9697
        },
        "end": {
          "x": -9.5,
          "y": 5.4848
        }
      },
      {
        "type": "Line",
        "start": {
          "x": -9.5,
          "y": 5.4848
        },
        "end": {
          "x": -9.5,
          "y": -5.4848
        }
      },
      {
        "type": "Line",
        "start": {
          "x": -9.5,
          "y": -5.4848
        },
        "end": {
          "x": 0,
          "y": -10.9697
        }
      },
      {
        "type": "Line",
        "start": {
          "x": 0,
          "y": -10.9697
        },
        "end": {
          "x": 9.5,
          "y": -5.4848
        }
      }
    ]
  }
}
3
create
ok
2ms
args
{
  "document_id": "doc_1781201684859_1",
  "type": "extrude",
  "name": "Hex body",
  "parent_part_id": "1",
  "params": {
    "sketch": 1,
    "direction": {
      "x": 0,
      "y": 0,
      "z": 8
    }
  }
}
4
create
err
1ms
args
{
  "document_id": "doc_1781201684859_1",
  "type": "cylinder",
  "name": "Hole",
  "params": {
    "radius": 5,
    "height": 8
  }
}
5
create
ok
2ms
args
{
  "document_id": "doc_1781201684859_1",
  "type": "cylinder",
  "name": "Hole",
  "params": {
    "radius": 5,
    "height": 8,
    "segments": 64
  }
}
6
read
ok
2ms
args
{
  "document_id": "doc_1781201684859_1"
}
7
create
ok
2ms
args
{
  "document_id": "doc_1781201684859_1",
  "type": "difference",
  "name": "Nut",
  "params": {
    "left": 2,
    "right": 3
  }
}
8
read
ok
1ms
args
{
  "document_id": "doc_1781201684859_1"
}
9
get_document
ok
1ms
args
{
  "document_id": "doc_1781201684859_1"
}
10
delete
ok
1ms
args
{
  "document_id": "doc_1781201684859_1",
  "part_id": "1"
}
11
delete
ok
0ms
args
{
  "document_id": "doc_1781201684859_1",
  "part_id": "2"
}
12
delete
ok
1ms
args
{
  "document_id": "doc_1781201684859_1",
  "part_id": "3"
}
13
get_document
ok
0ms
args
{
  "document_id": "doc_1781201684859_1"
}
14
render_view
ok
126ms
args
{
  "document_id": "doc_1781201684859_1"
}
15
get_document
ok
1ms
args
{
  "document_id": "doc_1781201684859_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260611T181444Z-bc71.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "Hex outline",
      "op": {
        "type": "Sketch2D",
        "origin": {
          "x": 0,
          "y": 0,
          "z": 0
        },
        "x_dir": {
          "x": 1,
          "y": 0,
          "z": 0
        },
        "y_dir": {
          "x": 0,
          "y": 1,
          "z": 0
        },
        "segments": [
          {
            "type": "Line",
            "start": {
              "x": 9.5,
              "y": -5.4848
            },
            "end": {
              "x": 9.5,
              "y": 5.4848
            }
          },
          {
            "type": "Line",
            "start": {
              "x": 9.5,
              "y": 5.4848
            },
            "end": {
              "x": 0,
              "y": 10.9697
            }
          },
          {
            "type": "Line",
            "start": {
              "x": 0,
              "y": 10.9697
            },
            "end": {
              "x": -9.5,
              "y": 5.4848
            }
          },
          {
            "type": "Line",
            "start": {
              "x": -9.5,
              "y": 5.4848
            },
            "end": {
              "x": -9.5,
              "y": -5.4848
            }
          },
          {
            "type": "Line",
            "start": {
              "x": -9.5,
              "y": -5.4848
            },
            "end": {
              "x": 0,
              "y": -10.9697
            }
          },
          {
            "type": "Line",
            "start": {
              "x": 0,
              "y": -10.9697
            },
            "end": {
              "x": 9.5,
              "y": -5.4848
            }
          }
        ]
      }
    },
    "2": {
      "id": 2,
      "name": "Hex body",
      "op": {
        "type": "Extrude",
        "sketch": 1,
        "direction": {
          "x": 0,
          "y": 0,
          "z": 8
        }
      }
    },
    "3": {
      "id": 3,
      "name": "Hole",
      "op": {
        "type": "Cylinder",
        "radius": 5,
        "height": 8,
        "segments": 64
      }
    },
    "4": {
      "id": 4,
      "name": "Nut",
      "op": {
        "type": "Difference",
        "left": 2,
        "right": 3
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 4,
      "material": "default"
    }
  ]
}
mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

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