← mecheval / run / a6-pulley-01 / claude-mcp-claude-opus-4-7 / 20260612T004118Z-fdb8

run 20260612T004118Z-fdb8

a6-pulley-01 · claude-mcp-claude-opus-4-7

Summary

statusfail
score0.33 (2/6)
submissionself-run
modelclaude-mcp-claude-opus-4-7 (anthropic)
started2026-06-12T00:41:18.872Z
ended2026-06-12T00:43:25.887Z
tokens633,639 in · 7,674 out · 641,313 total
wallclock127.0s
tool calls37
task hash58d33316e6c4cd6c…
vcad hash4b1f804777fa12bf…

Prompt

Make a flanged belt pulley as a single solid. The pulley has three coaxial sections stacked along Z, all centered on the Z axis, with the base on the XY plane. Bottom flange: a cylinder of diameter 80mm and height 8mm (z = 0 to z = 8). Belt groove section: a cylinder of diameter 50mm and height 24mm (z = 8 to z = 32). Top flange: a cylinder of diameter 80mm and height 8mm (z = 32 to z = 40). A central through-bore of diameter 16mm runs along the Z axis through the full height (z = 0 to z = 40). The three outer sections form the stepped outer profile of the pulley when unioned together; the belt rides in the groove between the two flanges. 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
Z off by -32.00mm
params + details 
params: {
  "type": "bbox",
  "min": [
    -40,
    -40,
    0
  ],
  "max": [
    40,
    40,
    40
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    40,
    40,
    8
  ],
  "actual_min": [
    -40,
    -40,
    0
  ],
  "deviation_max": [
    0,
    0,
    -32
  ],
  "deviation_min": [
    0,
    0,
    0
  ],
  "max_abs_deviation_mm": 32,
  "tolerance_mm": 0.1
}
2
mass_props
fail
volume off by 66.4%
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 119506.19,
  "center_of_mass": [
    0,
    0,
    20
  ],
  "tolerance_pct": 1
}

details: {
  "center_of_mass": {
    "actual": [
      -2.5674137250552716e-16,
      4.172047303214816e-16,
      3.999999999999993
    ],
    "bbox_diagonal_mm": 113.4195750300626,
    "deviation": [
      -2.5674137250552716e-16,
      4.172047303214816e-16,
      -16.000000000000007
    ],
    "max_abs_deviation_mm": 16.000000000000007,
    "pass": false,
    "spec": [
      0,
      0,
      20
    ],
    "tolerance_mm": 1.1341957503006261
  },
  "volume": {
    "actual_mm3": 40147.820818677304,
    "deviation_pct": 66.40523740345391,
    "pass": false,
    "spec_mm3": 119506.19,
    "tolerance_pct": 1
  }
}
3
hole_count
fail
found 0/1 holes of ⌀16mm
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 16,
  "expected": 1,
  "diameter_tolerance_mm": 0.1
}

details: {
  "actual": 0,
  "diameter_mm": 16,
  "diameter_tolerance_mm": 0.1,
  "expected": 1,
  "found": []
}
4
hole_positions
fail
1/1 mispositioned
params + details 
params: {
  "type": "hole_positions",
  "diameter_mm": 16,
  "positions": [
    [
      0,
      0,
      0
    ]
  ],
  "tolerance_mm": 0.2
}

details: {
  "diameter_mm": 16,
  "per_expected": [
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        0,
        0
      ]
    }
  ],
  "tolerance_mm": 0.2,
  "unmatched_extras": []
}
5
step_roundtrip
pass
params + details 
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          40,
          8
        ],
        "original_min": [
          -40,
          -40,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          40,
          8
        ],
        "roundtripped_min": [
          -40,
          -40,
          0
        ],
        "tolerance_mm": 1.1341957503006261
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0.4815275502572024,
        "original_mm3": 40147.820818677304,
        "pass": true,
        "roundtripped_mm3": 39954.49800060748
      }
    }
  ],
  "tolerance_pct": 1
}

Tool calls

0
open_document
ok
2ms
args
{}
1
create_cad_loon
err
8ms
args
{
  "source": "[let\n  [let profile [sketch 0 0 0  1 0 0  0 0 1  #[\n    [line 8 0   40 0]\n    [line 40 0  40 8]\n    [line 40 8  25 8]\n    [line 25 8  25 32]\n    [line 25 32 40 32]\n    [line 40 32 40 40]\n    [line 40 40 8 40]\n    [line 8 40  8 0]\n  ]]]\n  [revolve 0 0 0  0 0 1  360 profile]]",
  "format": "json"
}
2
open_document
err
2ms
args
{
  "initial": {}
}
3
create
err
9ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "sketch_2_d",
  "name": "Pulley Profile",
  "params": {
    "origin": {
      "x": 0,
      "y": 0,
      "z": 0
    },
    "x_axis": {
      "x": 1,
      "y": 0,
      "z": 0
    },
    "y_axis": {
      "x": 0,
      "y": 0,
      "z": 1
    },
    "segments": [
      {
        "type": "line",
        "x1": 8,
        "y1": 0,
        "x2": 40,
        "y2": 0
      },
      {
        "type": "line",
        "x1": 40,
        "y1": 0,
        "x2": 40,
        "y2": 8
      },
      {
        "type": "line",
        "x1": 40,
        "y1": 8,
        "x2": 25,
        "y2": 8
      },
      {
        "type": "line",
        "x1": 25,
        "y1": 8,
        "x2": 25,
        "y2": 32
      },
      {
        "type": "line",
        "x1": 25,
        "y1": 32,
        "x2": 40,
        "y2": 32
      },
      {
        "type": "line",
        "x1": 40,
        "y1": 32,
        "x2": 40,
        "y2": 40
      },
      {
        "type": "line",
        "x1": 40,
        "y1": 40,
        "x2": 8,
        "y2": 40
      },
      {
        "type": "line",
        "x1": 8,
        "y1": 40,
        "x2": 8,
        "y2": 0
      }
    ]
  }
}
4
create
err
3ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "sketch_2_d",
  "name": "Pulley Profile",
  "params": {
    "origin": {
      "x": 0,
      "y": 0,
      "z": 0
    },
    "x_axis": {
      "x": 1,
      "y": 0,
      "z": 0
    },
    "y_axis": {
      "x": 0,
      "y": 0,
      "z": 1
    },
    "segments": [
      {
        "type": "Line",
        "x1": 8,
        "y1": 0,
        "x2": 40,
        "y2": 0
      },
      {
        "type": "Line",
        "x1": 40,
        "y1": 0,
        "x2": 40,
        "y2": 8
      },
      {
        "type": "Line",
        "x1": 40,
        "y1": 8,
        "x2": 25,
        "y2": 8
      },
      {
        "type": "Line",
        "x1": 25,
        "y1": 8,
        "x2": 25,
        "y2": 32
      },
      {
        "type": "Line",
        "x1": 25,
        "y1": 32,
        "x2": 40,
        "y2": 32
      },
      {
        "type": "Line",
        "x1": 40,
        "y1": 32,
        "x2": 40,
        "y2": 40
      },
      {
        "type": "Line",
        "x1": 40,
        "y1": 40,
        "x2": 8,
        "y2": 40
      },
      {
        "type": "Line",
        "x1": 8,
        "y1": 40,
        "x2": 8,
        "y2": 0
      }
    ]
  }
}
5
create
err
3ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "sketch_2_d",
  "name": "Pulley Profile",
  "params": {
    "origin": {
      "x": 0,
      "y": 0,
      "z": 0
    },
    "x_axis": {
      "x": 1,
      "y": 0,
      "z": 0
    },
    "y_axis": {
      "x": 0,
      "y": 0,
      "z": 1
    },
    "segments": [
      {
        "type": "Line",
        "start": [
          8,
          0
        ],
        "end": [
          40,
          0
        ]
      },
      {
        "type": "Line",
        "start": [
          40,
          0
        ],
        "end": [
          40,
          8
        ]
      },
      {
        "type": "Line",
        "start": [
          40,
          8
        ],
        "end": [
          25,
          8
        ]
      },
      {
        "type": "Line",
        "start": [
          25,
          8
        ],
        "end": [
          25,
          32
        ]
      },
      {
        "type": "Line",
        "start": [
          25,
          32
        ],
        "end": [
          40,
          32
        ]
      },
      {
        "type": "Line",
        "start": [
          40,
          32
        ],
        "end": [
          40,
          40
        ]
      },
      {
        "type": "Line",
        "start": [
          40,
          40
        ],
        "end": [
          8,
          40
        ]
      },
      {
        "type": "Line",
        "start": [
          8,
          40
        ],
        "end": [
          8,
          0
        ]
      }
    ]
  }
}
6
create
ok
5ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "sketch_2_d",
  "name": "Pulley Profile",
  "params": {
    "origin": {
      "x": 0,
      "y": 0,
      "z": 0
    },
    "x_dir": {
      "x": 1,
      "y": 0,
      "z": 0
    },
    "y_dir": {
      "x": 0,
      "y": 0,
      "z": 1
    },
    "segments": [
      {
        "type": "Line",
        "start": [
          8,
          0
        ],
        "end": [
          40,
          0
        ]
      },
      {
        "type": "Line",
        "start": [
          40,
          0
        ],
        "end": [
          40,
          8
        ]
      },
      {
        "type": "Line",
        "start": [
          40,
          8
        ],
        "end": [
          25,
          8
        ]
      },
      {
        "type": "Line",
        "start": [
          25,
          8
        ],
        "end": [
          25,
          32
        ]
      },
      {
        "type": "Line",
        "start": [
          25,
          32
        ],
        "end": [
          40,
          32
        ]
      },
      {
        "type": "Line",
        "start": [
          40,
          32
        ],
        "end": [
          40,
          40
        ]
      },
      {
        "type": "Line",
        "start": [
          40,
          40
        ],
        "end": [
          8,
          40
        ]
      },
      {
        "type": "Line",
        "start": [
          8,
          40
        ],
        "end": [
          8,
          0
        ]
      }
    ]
  }
}
7
create
err
7ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "revolve",
  "name": "Pulley",
  "params": {
    "sketch_id": "1",
    "axis_origin": {
      "x": 0,
      "y": 0,
      "z": 0
    },
    "axis_direction": {
      "x": 0,
      "y": 0,
      "z": 1
    },
    "angle_deg": 360
  }
}
8
create
err
5ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "revolve",
  "name": "Pulley",
  "params": {
    "sketch": "1",
    "axis_origin": {
      "x": 0,
      "y": 0,
      "z": 0
    },
    "axis_direction": {
      "x": 0,
      "y": 0,
      "z": 1
    },
    "angle_deg": 360
  }
}
9
create
err
3ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "revolve",
  "name": "Pulley",
  "params": {
    "sketch": 1,
    "axis_origin": {
      "x": 0,
      "y": 0,
      "z": 0
    },
    "axis_direction": {
      "x": 0,
      "y": 0,
      "z": 1
    },
    "angle_deg": 360
  }
}
10
create
err
3ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "revolve",
  "name": "Pulley",
  "params": {
    "sketch": 1,
    "axis_origin": {
      "x": 0,
      "y": 0,
      "z": 0
    },
    "axis_dir": {
      "x": 0,
      "y": 0,
      "z": 1
    },
    "angle": 360
  }
}
11
create
ok
2ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "revolve",
  "name": "Pulley",
  "params": {
    "sketch": 1,
    "axis_origin": {
      "x": 0,
      "y": 0,
      "z": 0
    },
    "axis_dir": {
      "x": 0,
      "y": 0,
      "z": 1
    },
    "angle_deg": 360
  }
}
12
render_view
ok
100ms
args
{
  "document_id": "doc_1781224879047_1"
}
13
inspect_cad
ok
3ms
args
{
  "document_id": "doc_1781224879047_1"
}
14
read
ok
2ms
args
{
  "document_id": "doc_1781224879047_1"
}
15
read
ok
2ms
args
{
  "document_id": "doc_1781224879047_1",
  "part_id": "2"
}
16
delete
ok
2ms
args
{
  "document_id": "doc_1781224879047_1",
  "part_id": "1"
}
17
delete
ok
1ms
args
{
  "document_id": "doc_1781224879047_1",
  "part_id": "2"
}
18
create_cad_loon
ok
9ms
args
{
  "source": "[difference\n  [translate 0 0 0 [cylinder 8 40]]\n  [union\n    [translate 0 0 0 [cylinder 40 8]]\n    [union\n      [translate 0 0 8 [cylinder 25 24]]\n      [translate 0 0 32 [cylinder 40 8]]]]]",
  "format": "json"
}
19
create
err
3ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "cylinder",
  "name": "Bottom Flange",
  "params": {
    "radius": 40,
    "height": 8
  }
}
20
create
ok
2ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "cylinder",
  "name": "Bottom Flange",
  "params": {
    "radius": 40,
    "height": 8,
    "segments": 64
  }
}
21
create
ok
2ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "cylinder",
  "name": "Groove Section",
  "parent_part_id": "1",
  "params": {
    "radius": 25,
    "height": 24,
    "segments": 64
  }
}
22
read
ok
2ms
args
{
  "document_id": "doc_1781224879047_1"
}
23
read
ok
2ms
args
{
  "document_id": "doc_1781224879047_1",
  "part_id": "1"
}
24
delete
ok
2ms
args
{
  "document_id": "doc_1781224879047_1",
  "part_id": "1"
}
25
delete
ok
1ms
args
{
  "document_id": "doc_1781224879047_1",
  "part_id": "2"
}
26
create
ok
3ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "cylinder",
  "name": "Bottom Flange",
  "params": {
    "radius": 40,
    "height": 8,
    "segments": 64
  }
}
27
create
ok
2ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "cylinder",
  "name": "Groove",
  "params": {
    "radius": 25,
    "height": 24,
    "segments": 64
  }
}
28
create
err
2ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "translate",
  "name": "Move Groove",
  "parent_part_id": "2",
  "params": {
    "offset": {
      "x": 0,
      "y": 0,
      "z": 8
    }
  }
}
29
read
ok
2ms
args
{
  "document_id": "doc_1781224879047_1",
  "part_id": "2"
}
30
create
ok
2ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "translate",
  "name": "Move Groove",
  "parent_part_id": "2",
  "params": {
    "offset": {
      "x": 0,
      "y": 0,
      "z": 8
    },
    "child": 2
  }
}
31
read
ok
3ms
args
{
  "document_id": "doc_1781224879047_1"
}
32
delete
ok
1ms
args
{
  "document_id": "doc_1781224879047_1",
  "part_id": "1"
}
33
delete
ok
0ms
args
{
  "document_id": "doc_1781224879047_1",
  "part_id": "2"
}
34
delete
ok
0ms
args
{
  "document_id": "doc_1781224879047_1",
  "part_id": "3"
}
35
create
ok
2ms
args
{
  "document_id": "doc_1781224879047_1",
  "type": "cylinder",
  "name": "Body",
  "params": {
    "radius": 40,
    "height": 8,
    "segments": 64
  }
}
36
get_document
ok
1ms
args
{
  "document_id": "doc_1781224879047_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260612T004118Z-fdb8.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "Body",
      "op": {
        "type": "Cylinder",
        "radius": 40,
        "height": 8,
        "segments": 64
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 1,
      "material": "default"
    }
  ]
}
mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

generated 2026-06-19T01:47:56.275Z · static site, regenerate with npm run build -w @mecheval/leaderboard