← mecheval / run / a3-octagonal-flange-01 / claude-direct-claude-opus-4-7 / 20260428T231950Z-197e

run 20260428T231950Z-197e

a3-octagonal-flange-01 · claude-direct-claude-opus-4-7

Summary

statusfail
score0.83 (5/6)
submissionself-run
modelclaude-direct-claude-opus-4-7 (anthropic)
started2026-04-28T23:19:50.714Z
ended2026-04-28T23:20:02.384Z
tokens972 in · 1,335 out · 2,307 total
wallclock11.2s
tool calls1
task hash91605c57469285ce…
vcad hash0c47a38e66bc77d2…

Prompt

Make an octagonal prism flange. The outer cross-section is a regular octagon with flat-to-flat distance 40mm (apothem 20mm), oriented so two flats are parallel to the X axis (the top and bottom of the octagon). Height 8mm along Z, base on the XY plane (z = 0 to z = 8). Drill eight through-holes of diameter 5mm, axes parallel to Z, on a bolt circle of radius 15mm centered on the Z axis. The first bolt hole is on the +X axis, and the rest are evenly spaced every 45 degrees. 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 -1.65mm
params + details 
params: {
  "type": "bbox",
  "min": [
    -21.65,
    -20,
    0
  ],
  "max": [
    21.65,
    20,
    8
  ],
  "tolerance_mm": 0.3
}

details: {
  "actual_max": [
    20,
    20,
    8
  ],
  "actual_min": [
    -20,
    -20,
    0
  ],
  "deviation_max": [
    -1.6499999999999986,
    0,
    0
  ],
  "deviation_min": [
    1.6499999999999986,
    0,
    0
  ],
  "max_abs_deviation_mm": 1.6499999999999986,
  "tolerance_mm": 0.3
}
2
mass_props
pass
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 9347.81,
  "tolerance_pct": 1.5
}

details: {
  "volume": {
    "actual_mm3": 9355.289000244959,
    "deviation_pct": 0.08000804728550351,
    "pass": true,
    "spec_mm3": 9347.81,
    "tolerance_pct": 1.5
  }
}
3
hole_count
pass
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 5,
  "expected": 8,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 8,
  "diameter_mm": 5,
  "diameter_tolerance_mm": 0.05,
  "expected": 8,
  "found": [
    [
      15,
      0,
      5
    ],
    [
      10.606601717798211,
      10.606601717798211,
      5
    ],
    [
      0,
      15,
      5
    ],
    [
      -10.606601717798211,
      10.606601717798211,
      5
    ],
    [
      -15,
      0,
      5
    ],
    [
      -10.606601717798211,
      -10.606601717798211,
      5
    ],
    [
      0,
      -15,
      5
    ],
    [
      10.606601717798211,
      -10.606601717798211,
      5
    ]
  ]
}
4
hole_positions
pass
params + details 
params: {
  "type": "hole_positions",
  "diameter_mm": 5,
  "positions": [
    [
      15,
      0,
      0
    ],
    [
      10.61,
      10.61,
      0
    ],
    [
      0,
      15,
      0
    ],
    [
      -10.61,
      10.61,
      0
    ],
    [
      -15,
      0,
      0
    ],
    [
      -10.61,
      -10.61,
      0
    ],
    [
      0,
      -15,
      0
    ],
    [
      10.61,
      -10.61,
      0
    ]
  ],
  "tolerance_mm": 0.2
}

details: {
  "diameter_mm": 5,
  "per_expected": [
    {
      "distance_mm": 0,
      "matched_hole": [
        15,
        0
      ],
      "pass": true,
      "spec_xy": [
        15,
        0
      ]
    },
    {
      "distance_mm": 0.004805896778539621,
      "matched_hole": [
        10.606601717798211,
        10.606601717798211
      ],
      "pass": true,
      "spec_xy": [
        10.61,
        10.61
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        0,
        15
      ],
      "pass": true,
      "spec_xy": [
        0,
        15
      ]
    },
    {
      "distance_mm": 0.004805896778539621,
      "matched_hole": [
        -10.606601717798211,
        10.606601717798211
      ],
      "pass": true,
      "spec_xy": [
        -10.61,
        10.61
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        -15,
        0
      ],
      "pass": true,
      "spec_xy": [
        -15,
        0
      ]
    },
    {
      "distance_mm": 0.004805896778539621,
      "matched_hole": [
        -10.606601717798211,
        -10.606601717798211
      ],
      "pass": true,
      "spec_xy": [
        -10.61,
        -10.61
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        0,
        -15
      ],
      "pass": true,
      "spec_xy": [
        0,
        -15
      ]
    },
    {
      "distance_mm": 0.004805896778539621,
      "matched_hole": [
        10.606601717798211,
        -10.606601717798211
      ],
      "pass": true,
      "spec_xy": [
        10.61,
        -10.61
      ]
    }
  ],
  "tolerance_mm": 0.2,
  "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": [
          20,
          20,
          8
        ],
        "original_min": [
          -20,
          -20,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          20,
          20,
          8
        ],
        "roundtripped_min": [
          -20,
          -20,
          0
        ],
        "tolerance_mm": 0.856971411425142
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 9355.289000244959,
        "pass": true,
        "roundtripped_mm3": 9355.289000244959
      }
    }
  ],
  "tolerance_pct": 1.5
}

Tool calls

0
anthropic.messages.create
ok
11211ms
args
{
  "model": "claude-opus-4-7",
  "max_tokens": 8000,
  "system_chars": 1674,
  "user_chars": 564
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260428T231950Z-197e.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {"id":1,"name":"square_main","op":{"type":"Cube","size":{"x":40,"y":40,"z":8}}},
    "2": {"id":2,"name":"square_main_centered","op":{"type":"Translate","child":1,"offset":{"x":-20,"y":-20,"z":0}}},
    "3": {"id":3,"name":"square_rot","op":{"type":"Cube","size":{"x":40,"y":40,"z":8}}},
    "4": {"id":4,"name":"square_rot_centered","op":{"type":"Translate","child":3,"offset":{"x":-20,"y":-20,"z":0}}},
    "5": {"id":5,"name":"square_rotated","op":{"type":"Rotate","child":4,"angles":{"x":0,"y":0,"z":45}}},
    "6": {"id":6,"name":"octagon","op":{"type":"Intersection","left":2,"right":5}},

    "10": {"id":10,"name":"hole_proto","op":{"type":"Cylinder","radius":2.5,"height":10,"segments":32}},
    "11": {"id":11,"name":"hole_z","op":{"type":"Translate","child":10,"offset":{"x":0,"y":0,"z":-1}}},

    "20": {"id":20,"name":"hole0","op":{"type":"Translate","child":11,"offset":{"x":15.0,"y":0.0,"z":0}}},
    "21": {"id":21,"name":"hole1","op":{"type":"Translate","child":11,"offset":{"x":10.606601717798213,"y":10.606601717798213,"z":0}}},
    "22": {"id":22,"name":"hole2","op":{"type":"Translate","child":11,"offset":{"x":0.0,"y":15.0,"z":0}}},
    "23": {"id":23,"name":"hole3","op":{"type":"Translate","child":11,"offset":{"x":-10.606601717798213,"y":10.606601717798213,"z":0}}},
    "24": {"id":24,"name":"hole4","op":{"type":"Translate","child":11,"offset":{"x":-15.0,"y":0.0,"z":0}}},
    "25": {"id":25,"name":"hole5","op":{"type":"Translate","child":11,"offset":{"x":-10.606601717798213,"y":-10.606601717798213,"z":0}}},
    "26": {"id":26,"name":"hole6","op":{"type":"Translate","child":11,"offset":{"x":0.0,"y":-15.0,"z":0}}},
    "27": {"id":27,"name":"hole7","op":{"type":"Translate","child":11,"offset":{"x":10.606601717798213,"y":-10.606601717798213,"z":0}}},

    "30": {"id":30,"name":"u01","op":{"type":"Union","left":20,"right":21}},
    "31": {"id":31,"name":"u23","op":{"type":"Union","left":22,"right":23}},
    "32": {"id":32,"name":"u45","op":{"type":"Union","left":24,"right":25}},
    "33": {"id":33,"name":"u67","op":{"type":"Union","left":26,"right":27}},
    "34": {"id":34,"name":"u0123","op":{"type":"Union","left":30,"right":31}},
    "35": {"id":35,"name":"u4567","op":{"type":"Union","left":32,"right":33}},
    "36": {"id":36,"name":"all_holes","op":{"type":"Union","left":34,"right":35}},

    "40": {"id":40,"name":"flange","op":{"type":"Difference","left":6,"right":36}}
  },
  "materials": {},
  "part_materials": {},
  "roots": [{"root":40,"material":"default"}]
}
mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

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