← mecheval / run / a6-yoke-block-01 / claude-mcp-claude-opus-4-7 / 20260612T004813Z-1d17

run 20260612T004813Z-1d17

a6-yoke-block-01 · claude-mcp-claude-opus-4-7

Summary

status	fail
score	0.75 (3/4)
submission	self-run
model	claude-mcp-claude-opus-4-7 (anthropic)
started	2026-06-12T00:48:13.091Z
ended	2026-06-12T00:50:09.962Z
tokens	593,785 in · 6,146 out · 599,931 total
wallclock	116.8s
tool calls	43
task hash	`b5ef575b6d36db34…`
vcad hash	`03ddfc82c1448b6d…`

Prompt

Make a fork yoke as a single solid. The base block is 80mm × 40mm × 12mm, centered in X and Y with its bottom face on the XY plane (x in [-40, 40], y in [-20, 20], z in [0, 12]). Two vertical tines (fork arms) rise from the base. The left tine is 14mm × 40mm × 45mm at x in [-40, -26], y in [-20, 20], z in [12, 57]. The right tine is 14mm × 40mm × 45mm at x in [26, 40], y in [-20, 20], z in [12, 57]. The gap between the tines (x in [-26, 26]) is open. Through both tines, drill a coaxial cross-bore of diameter 18mm whose axis is parallel to X, centered at y = 0, z = 44.5, passing through the left tine (x in [-40, -26]) and the right tine (x in [26, 40]). The cross-bore removes a cylindrical channel of diameter 18mm from each tine; the open gap between the tines is unaffected. Output a single solid.

Checks

valid_solid

pass

params + details

params: {
  "type": "valid_solid"
}

details: {
  "root_count": 7,
  "solids_produced": 7
}

bbox

pass

params + details

params: {
  "type": "bbox",
  "min": [
    -40,
    -20,
    0
  ],
  "max": [
    40,
    20,
    57
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    40,
    20,
    57
  ],
  "actual_min": [
    -40,
    -20,
    0
  ],
  "deviation_max": [
    0,
    0,
    0
  ],
  "deviation_min": [
    0,
    0,
    0
  ],
  "max_abs_deviation_mm": 0,
  "tolerance_mm": 0.1
}

mass_props

fail

volume off by 320.2%

params + details

params: {
  "type": "mass_props",
  "volume_mm3": 81674.78,
  "center_of_mass": [
    0,
    0,
    20.23
  ],
  "tolerance_pct": 1.5
}

details: {
  "center_of_mass": {
    "actual": [
      -2.4229982633328553,
      -2.1392880494582917e-17,
      22.130096841553268
    ],
    "bbox_diagonal_mm": 106.061303028013,
    "deviation": [
      -2.4229982633328553,
      -2.1392880494582917e-17,
      1.9000968415532675
    ],
    "max_abs_deviation_mm": 2.4229982633328553,
    "pass": false,
    "spec": [
      0,
      0,
      20.23
    ],
    "tolerance_mm": 1.590919545420195
  },
  "volume": {
    "actual_mm3": 343211.14157800796,
    "deviation_pct": 320.21679345571295,
    "pass": false,
    "spec_mm3": 81674.78,
    "tolerance_pct": 1.5
  }
}

step_roundtrip

pass

params + details

params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1.5
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          20,
          12
        ],
        "original_min": [
          -40,
          -20,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          20,
          12
        ],
        "roundtripped_min": [
          -40,
          -20,
          0
        ],
        "tolerance_mm": 1.3536617007214173
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 38400,
        "pass": true,
        "roundtripped_mm3": 38400
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          -26,
          20,
          57
        ],
        "original_min": [
          -40,
          -20,
          12
        ],
        "pass": true,
        "roundtripped_max": [
          -26,
          20,
          57
        ],
        "roundtripped_min": [
          -40,
          -20,
          12
        ],
        "tolerance_mm": 0.9272135676315354
      },
      "index": 1,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 25200,
        "pass": true,
        "roundtripped_mm3": 25200
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          20,
          57
        ],
        "original_min": [
          26,
          -20,
          12
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          20,
          57
        ],
        "roundtripped_min": [
          26,
          -20,
          12
        ],
        "tolerance_mm": 0.9272135676315354
      },
      "index": 2,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 25200,
        "pass": true,
        "roundtripped_mm3": 25200
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          9,
          53.5
        ],
        "original_min": [
          -40,
          -9,
          35.5
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          9,
          53.5
        ],
        "roundtripped_min": [
          -40,
          -9,
          35.5
        ],
        "tolerance_mm": 1.2592855117089212
      },
      "index": 3,
      "pass": true,
      "volume": {
        "deviation_pct": 0.4815240989053527,
        "original_mm3": 20324.83319693583,
        "pass": true,
        "roundtripped_mm3": 20226.96422703027
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          20,
          57
        ],
        "original_min": [
          -40,
          -20,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          20,
          57
        ],
        "roundtripped_min": [
          -40,
          -20,
          0
        ],
        "tolerance_mm": 1.590919545420195
      },
      "index": 4,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 63600,
        "pass": true,
        "roundtripped_mm3": 63600
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          20,
          57
        ],
        "original_min": [
          -40,
          -20,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          20,
          57
        ],
        "roundtripped_min": [
          -40,
          -20,
          0
        ],
        "tolerance_mm": 1.590919545420195
      },
      "index": 5,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 88800,
        "pass": true,
        "roundtripped_mm3": 88800
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          20,
          57
        ],
        "original_min": [
          -40,
          -20,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          20,
          57
        ],
        "roundtripped_min": [
          -40,
          -20,
          0
        ],
        "tolerance_mm": 1.590919545420195
      },
      "index": 6,
      "pass": true,
      "volume": {
        "deviation_pct": 0.027955839149571764,
        "original_mm3": 81686.30838107213,
        "pass": true,
        "roundtripped_mm3": 81709.14447405036
      }
    }
  ],
  "tolerance_pct": 1.5
}

Tool calls

open_document

2ms

args

{}

create_cad_loon

err

9ms

args

{
  "source": "[let\n  [let base [translate -40 -20 0 [cube 80 40 12]]]\n  [let left-tine [translate -40 -20 12 [cube 14 40 45]]]\n  [let right-tine [translate 26 -20 12 [cube 14 40 45]]]\n  [let body [union base [union left-tine right-tine]]]\n  [let bore [translate -40 0 44.5 [rotate 0 90 0 [cylinder 9 80]]]]\n  [root [difference bore body] \"steel\"]]"
}

create

7ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "cube",
  "name": "Base",
  "params": {
    "size": [
      80,
      40,
      12
    ],
    "center": [
      0,
      0,
      6
    ]
  }
}

read

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "1"
}

delete

4ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "1"
}

create_cad_loon

4ms

args

{
  "source": "[root\n  [difference\n    [translate -40 0 44.5 [rotate 0 90 0 [cylinder 9 80]]]\n    [union\n      [translate -40 -20 0 [cube 80 40 12]]\n      [union\n        [translate -40 -20 12 [cube 14 40 45]]\n        [translate 26 -20 12 [cube 14 40 45]]]]]\n  \"steel\"]"
}

create

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "cube",
  "name": "BaseCube",
  "params": {
    "size": [
      80,
      40,
      12
    ]
  }
}

create

1ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "cube",
  "name": "LeftTineCube",
  "params": {
    "size": [
      14,
      40,
      45
    ]
  }
}

create

1ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "cube",
  "name": "RightTineCube",
  "params": {
    "size": [
      14,
      40,
      45
    ]
  }
}

create

err

1ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "cylinder",
  "name": "BoreCyl",
  "params": {
    "radius": 9,
    "height": 80
  }
}

read

2ms

args

{
  "document_id": "doc_1781225293276_1"
}

delete

3ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "1"
}

delete

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "2"
}

delete

1ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "3"
}

create

5ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "cube",
  "name": "BaseCube",
  "params": {
    "size": [
      80,
      40,
      12
    ]
  }
}

create

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "translate",
  "name": "BaseT",
  "parent_part_id": "1",
  "params": {
    "offset": [
      -40,
      -20,
      0
    ],
    "child": 1
  }
}

read

1ms

args

{
  "document_id": "doc_1781225293276_1"
}

read

3ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "2"
}

read

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "1"
}

delete

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "1"
}

read

1ms

args

{
  "document_id": "doc_1781225293276_1"
}

create

3ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "cube",
  "name": "LeftTineCube",
  "params": {
    "size": [
      14,
      40,
      45
    ]
  }
}

create

3ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "translate",
  "name": "LeftTineT",
  "parent_part_id": "3",
  "params": {
    "offset": [
      -40,
      -20,
      12
    ],
    "child": 3
  }
}

create

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "cube",
  "name": "RightTineCube",
  "params": {
    "size": [
      14,
      40,
      45
    ]
  }
}

create

1ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "cylinder",
  "name": "BoreCyl",
  "params": {
    "radius": 9,
    "height": 80,
    "segments": 64
  }
}

delete

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "3"
}

create

1ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "translate",
  "name": "RightTineT",
  "parent_part_id": "5",
  "params": {
    "offset": [
      26,
      -20,
      12
    ],
    "child": 5
  }
}

create

err

1ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "rotate",
  "name": "BoreR",
  "parent_part_id": "6",
  "params": {
    "rotation": [
      0,
      90,
      0
    ],
    "child": 6
  }
}

create

1ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "rotate",
  "name": "BoreR",
  "parent_part_id": "6",
  "params": {
    "angles": [
      0,
      90,
      0
    ],
    "child": 6
  }
}

delete

1ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "5"
}

create

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "translate",
  "name": "BoreT",
  "parent_part_id": "8",
  "params": {
    "offset": [
      -40,
      0,
      44.5
    ],
    "child": 8
  }
}

delete

1ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "6"
}

read

2ms

args

{
  "document_id": "doc_1781225293276_1"
}

read

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "9"
}

delete

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "8"
}

read

2ms

args

{
  "document_id": "doc_1781225293276_1"
}

create

err

4ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "union",
  "name": "BaseLeft",
  "params": {
    "children": [
      2,
      4
    ]
  }
}

create

1ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "union",
  "name": "BaseLeft",
  "params": {
    "left": 2,
    "right": 4
  }
}

read

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "part_id": "10"
}

read

2ms

args

{
  "document_id": "doc_1781225293276_1"
}

create

1ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "union",
  "name": "Body",
  "params": {
    "left": 10,
    "right": 7
  }
}

create

2ms

args

{
  "document_id": "doc_1781225293276_1",
  "type": "difference",
  "name": "ForkYoke",
  "params": {
    "left": 11,
    "right": 9
  }
}

get_document

0ms

args

{
  "document_id": "doc_1781225293276_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260612T004813Z-1d17.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "BaseCube",
      "op": {
        "type": "Cube",
        "size": {
          "x": 80,
          "y": 40,
          "z": 12
        }
      }
    },
    "2": {
      "id": 2,
      "name": "BaseT",
      "op": {
        "type": "Translate",
        "child": 1,
        "offset": {
          "x": -40,
          "y": -20,
          "z": 0
        }
      }
    },
    "3": {
      "id": 3,
      "name": "LeftTineCube",
      "op": {
        "type": "Cube",
        "size": {
          "x": 14,
          "y": 40,
          "z": 45
        }
      }
    },
    "4": {
      "id": 4,
      "name": "LeftTineT",
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": {
          "x": -40,
          "y": -20,
          "z": 12
        }
      }
    },
    "5": {
      "id": 5,
      "name": "RightTineCube",
      "op": {
        "type": "Cube",
        "size": {
          "x": 14,
          "y": 40,
          "z": 45
        }
      }
    },
    "6": {
      "id": 6,
      "name": "BoreCyl",
      "op": {
        "type": "Cylinder",
        "radius": 9,
        "height": 80,
        "segments": 64
      }
    },
    "7": {
      "id": 7,
      "name": "RightTineT",
      "op": {
        "type": "Translate",
        "child": 5,
        "offset": {
          "x": 26,
          "y": -20,
          "z": 12
        }
      }
    },
    "8": {
      "id": 8,
      "name": "BoreR",
      "op": {
        "type": "Rotate",
        "child": 6,
        "angles": {
          "x": 0,
          "y": 90,
          "z": 0
        }
      }
    },
    "9": {
      "id": 9,
      "name": "BoreT",
      "op": {
        "type": "Translate",
        "child": 8,
        "offset": {
          "x": -40,
          "y": 0,
          "z": 44.5
        }
      }
    },
    "10": {
      "id": 10,
      "name": "BaseLeft",
      "op": {
        "type": "Union",
        "left": 2,
        "right": 4
      }
    },
    "11": {
      "id": 11,
      "name": "Body",
      "op": {
        "type": "Union",
        "left": 10,
        "right": 7
      }
    },
    "12": {
      "id": 12,
      "name": "ForkYoke",
      "op": {
        "type": "Difference",
        "left": 11,
        "right": 9
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 2,
      "material": "default"
    },
    {
      "root": 4,
      "material": "default"
    },
    {
      "root": 7,
      "material": "default"
    },
    {
      "root": 9,
      "material": "default"
    },
    {
      "root": 10,
      "material": "default"
    },
    {
      "root": 11,
      "material": "default"
    },
    {
      "root": 12,
      "material": "default"
    }
  ]
}

generated 2026-06-19T01:47:56.289Z · static site, regenerate with npm run build -w @mecheval/leaderboard