← mecheval / run / a6-pulley-01 / claude-mcp-claude-opus-4-7 / 20260612T004227Z-1619

run 20260612T004227Z-1619

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

Summary

statusPASS
score1.00 (6/6)
submissionself-run
modelclaude-mcp-claude-opus-4-7 (anthropic)
started2026-06-12T00:42:27.467Z
ended2026-06-12T00:44:34.368Z
tokens654,280 in · 7,699 out · 661,979 total
wallclock126.8s
tool calls47
task hash58d33316e6c4cd6c…
vcad hash8ab7758519f2eac9…

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
pass
params + details 
params: {
  "type": "bbox",
  "min": [
    -40,
    -40,
    0
  ],
  "max": [
    40,
    40,
    40
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    40,
    40,
    40
  ],
  "actual_min": [
    -40,
    -40,
    0
  ],
  "deviation_max": [
    0,
    0,
    0
  ],
  "deviation_min": [
    0,
    0,
    0
  ],
  "max_abs_deviation_mm": 0,
  "tolerance_mm": 0.1
}
2
mass_props
pass
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 119506.19,
  "center_of_mass": [
    0,
    0,
    20
  ],
  "tolerance_pct": 1
}

details: {
  "center_of_mass": {
    "actual": [
      -3.8351606014111355e-16,
      3.144355275691117e-17,
      20.000000000000007
    ],
    "bbox_diagonal_mm": 120,
    "deviation": [
      -3.8351606014111355e-16,
      3.144355275691117e-17,
      7.105427357601002e-15
    ],
    "max_abs_deviation_mm": 7.105427357601002e-15,
    "pass": true,
    "spec": [
      0,
      0,
      20
    ],
    "tolerance_mm": 1.2
  },
  "volume": {
    "actual_mm3": 119314.30502835668,
    "deviation_pct": 0.16056488090141427,
    "pass": true,
    "spec_mm3": 119506.19,
    "tolerance_pct": 1
  }
}
3
hole_count
pass
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 16,
  "expected": 1,
  "diameter_tolerance_mm": 0.1
}

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

details: {
  "diameter_mm": 16,
  "per_expected": [
    {
      "distance_mm": 0,
      "matched_hole": [
        0,
        0
      ],
      "pass": true,
      "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,
          40
        ],
        "original_min": [
          -40,
          -40,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          40,
          40
        ],
        "roundtripped_min": [
          -40,
          -40,
          0
        ],
        "tolerance_mm": 1.2
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0.42903631954646015,
        "original_mm3": 119314.30502835674,
        "pass": true,
        "roundtripped_mm3": 118802.40332537064
      }
    }
  ],
  "tolerance_pct": 1
}

Tool calls

0
open_document
ok
2ms
args
{}
1
create
err
5ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "difference",
  "name": "Pulley",
  "params": {
    "a": {
      "op": "union",
      "params": {
        "a": {
          "op": "cylinder",
          "params": {
            "radius": 40,
            "height": 8
          }
        },
        "b": {
          "op": "union",
          "params": {
            "a": {
              "op": "translate",
              "params": {
                "x": 0,
                "y": 0,
                "z": 8,
                "child": {
                  "op": "cylinder",
                  "params": {
                    "radius": 25,
                    "height": 24
                  }
                }
              }
            },
            "b": {
              "op": "translate",
              "params": {
                "x": 0,
                "y": 0,
                "z": 32,
                "child": {
                  "op": "cylinder",
                  "params": {
                    "radius": 40,
                    "height": 8
                  }
                }
              }
            }
          }
        }
      }
    },
    "b": {
      "op": "cylinder",
      "params": {
        "radius": 8,
        "height": 40
      }
    }
  }
}
2
create_cad_loon
ok
13ms
args
{
  "source": "[let\n  flange-bot [cylinder 40 8]\n  groove [translate 0 0 8 [cylinder 25 24]]\n  flange-top [translate 0 0 32 [cylinder 40 8]]\n  outer [union flange-bot [union groove flange-top]]\n  bore [cylinder 8 40]\n  [root [difference bore outer] \"steel\"]]",
  "format": "json"
}
3
create
err
3ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "cylinder",
  "name": "BottomFlange",
  "params": {
    "radius": 40,
    "height": 8
  }
}
4
create
ok
3ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "cylinder",
  "name": "BottomFlange",
  "params": {
    "radius": 40,
    "height": 8,
    "segments": 64
  }
}
5
create
ok
3ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "cylinder",
  "name": "Groove",
  "params": {
    "radius": 25,
    "height": 24,
    "segments": 64
  }
}
6
create
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "cylinder",
  "name": "TopFlange",
  "params": {
    "radius": 40,
    "height": 8,
    "segments": 64
  }
}
7
create
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "cylinder",
  "name": "Bore",
  "params": {
    "radius": 8,
    "height": 40,
    "segments": 64
  }
}
8
read
ok
3ms
args
{
  "document_id": "doc_1781224947647_1"
}
9
delete
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "1"
}
10
delete
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "2"
}
11
delete
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "3"
}
12
delete
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "4"
}
13
create
err
4ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "sketch_2_d",
  "name": "PulleyProfile",
  "params": {
    "origin": [
      0,
      0,
      0
    ],
    "x_axis": [
      1,
      0,
      0
    ],
    "y_axis": [
      0,
      0,
      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
      }
    ]
  }
}
14
create_cad_loon
ok
3ms
args
{
  "source": "[revolve 0 0 0 0 0 1 360 [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]]]",
  "format": "json"
}
15
create
ok
2ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "sketch_2_d",
  "name": "PulleyProfile",
  "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": {
          "x": 8,
          "y": 0
        },
        "end": {
          "x": 40,
          "y": 0
        }
      },
      {
        "type": "Line",
        "start": {
          "x": 40,
          "y": 0
        },
        "end": {
          "x": 40,
          "y": 8
        }
      },
      {
        "type": "Line",
        "start": {
          "x": 40,
          "y": 8
        },
        "end": {
          "x": 25,
          "y": 8
        }
      },
      {
        "type": "Line",
        "start": {
          "x": 25,
          "y": 8
        },
        "end": {
          "x": 25,
          "y": 32
        }
      },
      {
        "type": "Line",
        "start": {
          "x": 25,
          "y": 32
        },
        "end": {
          "x": 40,
          "y": 32
        }
      },
      {
        "type": "Line",
        "start": {
          "x": 40,
          "y": 32
        },
        "end": {
          "x": 40,
          "y": 40
        }
      },
      {
        "type": "Line",
        "start": {
          "x": 40,
          "y": 40
        },
        "end": {
          "x": 8,
          "y": 40
        }
      },
      {
        "type": "Line",
        "start": {
          "x": 8,
          "y": 40
        },
        "end": {
          "x": 8,
          "y": 0
        }
      }
    ]
  }
}
16
create
ok
4ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "revolve",
  "name": "Pulley",
  "parent_part_id": "1",
  "params": {
    "sketch": 1,
    "axis_origin": {
      "x": 0,
      "y": 0,
      "z": 0
    },
    "axis_dir": {
      "x": 0,
      "y": 0,
      "z": 1
    },
    "angle_deg": 360
  }
}
17
render_view
ok
96ms
args
{
  "document_id": "doc_1781224947647_1"
}
18
inspect_cad
ok
3ms
args
{
  "document_id": "doc_1781224947647_1"
}
19
delete
ok
2ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "2"
}
20
read
ok
2ms
args
{
  "document_id": "doc_1781224947647_1"
}
21
delete
ok
2ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "1"
}
22
create
ok
2ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "cylinder",
  "name": "BottomFlange",
  "params": {
    "radius": 40,
    "height": 8,
    "segments": 64
  }
}
23
create
ok
2ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "cylinder",
  "name": "GrooveRaw",
  "params": {
    "radius": 25,
    "height": 24,
    "segments": 64
  }
}
24
create
err
2ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "translate",
  "name": "GrooveT",
  "parent_part_id": "2",
  "params": {
    "x": 0,
    "y": 0,
    "z": 8
  }
}
25
create
err
2ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "translate",
  "name": "GrooveT",
  "parent_part_id": "2",
  "params": {
    "x": 0,
    "y": 0,
    "z": 8,
    "child": 2
  }
}
26
create
ok
2ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "translate",
  "name": "GrooveT",
  "parent_part_id": "2",
  "params": {
    "offset": {
      "x": 0,
      "y": 0,
      "z": 8
    },
    "child": 2
  }
}
27
create
ok
3ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "cylinder",
  "name": "TopFlangeRaw",
  "params": {
    "radius": 40,
    "height": 8,
    "segments": 64
  }
}
28
create
ok
2ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "translate",
  "name": "TopFlangeT",
  "parent_part_id": "4",
  "params": {
    "offset": {
      "x": 0,
      "y": 0,
      "z": 32
    },
    "child": 4
  }
}
29
read
ok
2ms
args
{
  "document_id": "doc_1781224947647_1"
}
30
read
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "3"
}
31
read
ok
0ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "2"
}
32
get_document
ok
1ms
args
{
  "document_id": "doc_1781224947647_1"
}
33
create
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "union",
  "name": "BotPlusGroove",
  "parent_part_id": "1",
  "params": {
    "left": 1,
    "right": 3
  }
}
34
create
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "union",
  "name": "Outer",
  "parent_part_id": "6",
  "params": {
    "left": 6,
    "right": 5
  }
}
35
create
ok
2ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "cylinder",
  "name": "BoreRaw",
  "params": {
    "radius": 8,
    "height": 40,
    "segments": 64
  }
}
36
create
ok
2ms
args
{
  "document_id": "doc_1781224947647_1",
  "type": "difference",
  "name": "Pulley",
  "parent_part_id": "7",
  "params": {
    "left": 7,
    "right": 8
  }
}
37
get_document
ok
1ms
args
{
  "document_id": "doc_1781224947647_1"
}
38
delete
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "1"
}
39
delete
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "2"
}
40
delete
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "3"
}
41
delete
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "4"
}
42
delete
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "5"
}
43
delete
ok
1ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "6"
}
44
delete
ok
0ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "7"
}
45
delete
ok
0ms
args
{
  "document_id": "doc_1781224947647_1",
  "part_id": "8"
}
46
get_document
ok
0ms
args
{
  "document_id": "doc_1781224947647_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260612T004227Z-1619.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "BottomFlange",
      "op": {
        "type": "Cylinder",
        "radius": 40,
        "height": 8,
        "segments": 64
      }
    },
    "2": {
      "id": 2,
      "name": "GrooveRaw",
      "op": {
        "type": "Cylinder",
        "radius": 25,
        "height": 24,
        "segments": 64
      }
    },
    "3": {
      "id": 3,
      "name": "GrooveT",
      "op": {
        "type": "Translate",
        "child": 2,
        "offset": {
          "x": 0,
          "y": 0,
          "z": 8
        }
      }
    },
    "4": {
      "id": 4,
      "name": "TopFlangeRaw",
      "op": {
        "type": "Cylinder",
        "radius": 40,
        "height": 8,
        "segments": 64
      }
    },
    "5": {
      "id": 5,
      "name": "TopFlangeT",
      "op": {
        "type": "Translate",
        "child": 4,
        "offset": {
          "x": 0,
          "y": 0,
          "z": 32
        }
      }
    },
    "6": {
      "id": 6,
      "name": "BotPlusGroove",
      "op": {
        "type": "Union",
        "left": 1,
        "right": 3
      }
    },
    "7": {
      "id": 7,
      "name": "Outer",
      "op": {
        "type": "Union",
        "left": 6,
        "right": 5
      }
    },
    "8": {
      "id": 8,
      "name": "BoreRaw",
      "op": {
        "type": "Cylinder",
        "radius": 8,
        "height": 40,
        "segments": 64
      }
    },
    "9": {
      "id": 9,
      "name": "Pulley",
      "op": {
        "type": "Difference",
        "left": 7,
        "right": 8
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 9,
      "material": "default"
    }
  ]
}
mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

generated 2026-06-19T01:47:56.277Z · static site, regenerate with npm run build -w @mecheval/leaderboard