← mecheval / run / a4-bolt-circle-flange-with-bore-01 / claude-direct-claude-sonnet-4-6 / 20260429T120545Z-1679

run 20260429T120545Z-1679

a4-bolt-circle-flange-with-bore-01 · claude-direct-claude-sonnet-4-6

Summary

statusPASS
score1.00 (8/8)
submissionself-run
modelclaude-direct-claude-sonnet-4-6 (anthropic)
started2026-04-29T12:05:45.430Z
ended2026-04-29T12:05:56.573Z
tokens750 in · 1,214 out · 1,964 total
wallclock10.0s
tool calls1
task hash33b12253990b5195…
vcad hash971c598ee7d51bfc…

Prompt

Make a round flange as a single solid. The outer body is a cylinder of diameter 100mm and thickness 12mm, with its bottom face on the XY plane (z = 0 to z = 12), centered on the Z axis. A central through-bore of diameter 40mm runs along the Z axis through the full thickness. Six bolt holes of diameter 8mm, axes parallel to Z, are arranged on a bolt circle of diameter 75mm (radius 37.5mm) centered on the Z axis, passing through the full thickness. The first bolt hole is on the +X axis, and the remaining five are evenly spaced every 60 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
pass
params + details 
params: {
  "type": "bbox",
  "min": [
    -50,
    -50,
    0
  ],
  "max": [
    50,
    50,
    12
  ],
  "tolerance_mm": 0.3
}

details: {
  "actual_max": [
    50,
    50,
    12
  ],
  "actual_min": [
    -50,
    -50,
    0
  ],
  "deviation_max": [
    0,
    0,
    0
  ],
  "deviation_min": [
    0,
    0,
    0
  ],
  "max_abs_deviation_mm": 0,
  "tolerance_mm": 0.3
}
2
mass_props
pass
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 75549.02,
  "tolerance_pct": 1.5
}

details: {
  "volume": {
    "actual_mm3": 75427.71798860747,
    "deviation_pct": 0.1605606682820378,
    "pass": true,
    "spec_mm3": 75549.02,
    "tolerance_pct": 1.5
  }
}
3
hole_count
pass
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 40,
  "expected": 1,
  "diameter_tolerance_mm": 0.1
}

details: {
  "actual": 1,
  "diameter_mm": 40,
  "diameter_tolerance_mm": 0.1,
  "expected": 1,
  "found": [
    [
      0,
      0,
      40
    ]
  ]
}
4
hole_positions
pass
params + details 
params: {
  "type": "hole_positions",
  "diameter_mm": 40,
  "positions": [
    [
      0,
      0,
      0
    ]
  ],
  "tolerance_mm": 0.2
}

details: {
  "diameter_mm": 40,
  "per_expected": [
    {
      "distance_mm": 0,
      "matched_hole": [
        0,
        0
      ],
      "pass": true,
      "spec_xy": [
        0,
        0
      ]
    }
  ],
  "tolerance_mm": 0.2,
  "unmatched_extras": []
}
5
hole_count
pass
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 8,
  "expected": 6,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 6,
  "diameter_mm": 8,
  "diameter_tolerance_mm": 0.05,
  "expected": 6,
  "found": [
    [
      37.5,
      0,
      8
    ],
    [
      18.75,
      32.475844,
      8
    ],
    [
      -18.75,
      32.475844,
      8
    ],
    [
      -37.5,
      0,
      8
    ],
    [
      -18.75,
      -32.475844,
      8
    ],
    [
      18.75,
      -32.475844,
      8
    ]
  ]
}
6
hole_positions
pass
params + details 
params: {
  "type": "hole_positions",
  "diameter_mm": 8,
  "positions": [
    [
      37.5,
      0,
      0
    ],
    [
      18.75,
      32.476,
      0
    ],
    [
      -18.75,
      32.476,
      0
    ],
    [
      -37.5,
      0,
      0
    ],
    [
      -18.75,
      -32.476,
      0
    ],
    [
      18.75,
      -32.476,
      0
    ]
  ],
  "tolerance_mm": 0.2
}

details: {
  "diameter_mm": 8,
  "per_expected": [
    {
      "distance_mm": 0,
      "matched_hole": [
        37.5,
        0
      ],
      "pass": true,
      "spec_xy": [
        37.5,
        0
      ]
    },
    {
      "distance_mm": 0.00015599999999693637,
      "matched_hole": [
        18.75,
        32.475844
      ],
      "pass": true,
      "spec_xy": [
        18.75,
        32.476
      ]
    },
    {
      "distance_mm": 0.00015599999999693637,
      "matched_hole": [
        -18.75,
        32.475844
      ],
      "pass": true,
      "spec_xy": [
        -18.75,
        32.476
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        -37.5,
        0
      ],
      "pass": true,
      "spec_xy": [
        -37.5,
        0
      ]
    },
    {
      "distance_mm": 0.00015599999999693637,
      "matched_hole": [
        -18.75,
        -32.475844
      ],
      "pass": true,
      "spec_xy": [
        -18.75,
        -32.476
      ]
    },
    {
      "distance_mm": 0.00015599999999693637,
      "matched_hole": [
        18.75,
        -32.475844
      ],
      "pass": true,
      "spec_xy": [
        18.75,
        -32.476
      ]
    }
  ],
  "tolerance_mm": 0.2,
  "unmatched_extras": []
}
7
step_roundtrip
pass
params + details 
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1.5
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          50,
          50,
          12
        ],
        "original_min": [
          -50,
          -50,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          50,
          50,
          12
        ],
        "roundtripped_min": [
          -50,
          -50,
          0
        ],
        "tolerance_mm": 2.1289433999052205
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0.5212511056441466,
        "original_mm3": 75427.71798860743,
        "pass": true,
        "roundtripped_mm3": 75034.55017462966
      }
    }
  ],
  "tolerance_pct": 1.5
}

Tool calls

0
anthropic.messages.create
ok
9957ms
args
{
  "model": "claude-sonnet-4-6",
  "max_tokens": 8000,
  "system_chars": 1674,
  "user_chars": 648
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260429T120545Z-1679.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {"id": 1, "name": "outer_cylinder", "op": {"type": "Cylinder", "radius": 50, "height": 12, "segments": 64}},
    "2": {"id": 2, "name": "outer_centered", "op": {"type": "Translate", "child": 1, "offset": {"x": 0, "y": 0, "z": 0}}},
    "3": {"id": 3, "name": "bore_cyl", "op": {"type": "Cylinder", "radius": 20, "height": 12, "segments": 64}},
    "4": {"id": 4, "name": "body_minus_bore", "op": {"type": "Difference", "left": 2, "right": 3}},

    "10": {"id": 10, "name": "bolt_hole_cyl_0", "op": {"type": "Cylinder", "radius": 4, "height": 12, "segments": 32}},
    "11": {"id": 11, "name": "bolt_hole_0", "op": {"type": "Translate", "child": 10, "offset": {"x": 37.5, "y": 0, "z": 0}}},

    "12": {"id": 12, "name": "bolt_hole_cyl_1", "op": {"type": "Cylinder", "radius": 4, "height": 12, "segments": 32}},
    "13": {"id": 13, "name": "bolt_hole_1", "op": {"type": "Translate", "child": 12, "offset": {"x": 18.75, "y": 32.475844, "z": 0}}},

    "14": {"id": 14, "name": "bolt_hole_cyl_2", "op": {"type": "Cylinder", "radius": 4, "height": 12, "segments": 32}},
    "15": {"id": 15, "name": "bolt_hole_2", "op": {"type": "Translate", "child": 14, "offset": {"x": -18.75, "y": 32.475844, "z": 0}}},

    "16": {"id": 16, "name": "bolt_hole_cyl_3", "op": {"type": "Cylinder", "radius": 4, "height": 12, "segments": 32}},
    "17": {"id": 17, "name": "bolt_hole_3", "op": {"type": "Translate", "child": 16, "offset": {"x": -37.5, "y": 0, "z": 0}}},

    "18": {"id": 18, "name": "bolt_hole_cyl_4", "op": {"type": "Cylinder", "radius": 4, "height": 12, "segments": 32}},
    "19": {"id": 19, "name": "bolt_hole_4", "op": {"type": "Translate", "child": 18, "offset": {"x": -18.75, "y": -32.475844, "z": 0}}},

    "20": {"id": 20, "name": "bolt_hole_cyl_5", "op": {"type": "Cylinder", "radius": 4, "height": 12, "segments": 32}},
    "21": {"id": 21, "name": "bolt_hole_5", "op": {"type": "Translate", "child": 20, "offset": {"x": 18.75, "y": -32.475844, "z": 0}}},

    "30": {"id": 30, "name": "union_holes_01", "op": {"type": "Union", "left": 11, "right": 13}},
    "31": {"id": 31, "name": "union_holes_012", "op": {"type": "Union", "left": 30, "right": 15}},
    "32": {"id": 32, "name": "union_holes_0123", "op": {"type": "Union", "left": 31, "right": 17}},
    "33": {"id": 33, "name": "union_holes_01234", "op": {"type": "Union", "left": 32, "right": 19}},
    "34": {"id": 34, "name": "union_all_holes", "op": {"type": "Union", "left": 33, "right": 21}},

    "40": {"id": 40, "name": "flange", "op": {"type": "Difference", "left": 4, "right": 34}}
  },
  "materials": {},
  "part_materials": {},
  "roots": [{"root": 40, "material": "default"}]
}
mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

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