← mecheval / run / a5-stepped-boss-plate-01 / claude-mcp-claude-opus-4-7 / 20260611T225653Z-b015

run 20260611T225653Z-b015

a5-stepped-boss-plate-01 · claude-mcp-claude-opus-4-7

Summary

statusfail
score0.25 (2/8)
submissionself-run
modelclaude-mcp-claude-opus-4-7 (anthropic)
started2026-06-11T22:56:53.612Z
ended2026-06-11T22:58:40.832Z
tokens624,267 in · 5,861 out · 630,128 total
wallclock107.2s
tool calls39
task hash6aa883a9a3b0c7a6…
vcad hash676cde81ff942276…

Prompt

Make a stepped boss plate as a single solid. The base is a rectangular plate 80mm × 60mm × 10mm, centered in X and Y with its bottom face on the XY plane (x in [-40, 40], y in [-30, 30], z in [0, 10]). Centered on top of the base plate sits a rectangular boss 40mm × 30mm × 8mm (x in [-20, 20], y in [-15, 15], z in [10, 18]). A central through-bore of diameter 18mm, axis parallel to Z, passes through the entire assembly from bottom to top (z = 0 to z = 18), centered at the origin. Four corner bolt holes of diameter 6mm, axes parallel to Z, pass through the base plate only (z = 0 to z = 10), located at (28, 22), (-28, 22), (-28, -22), (28, -22). Output a single solid.

Checks

0
valid_solid
pass
params + details 
params: {
  "type": "valid_solid"
}

details: {
  "root_count": 3,
  "solids_produced": 3
}
1
bbox
fail
Z off by +0.20mm
params + details 
params: {
  "type": "bbox",
  "min": [
    -40,
    -30,
    0
  ],
  "max": [
    40,
    30,
    18
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    40,
    30,
    18.200000762939453
  ],
  "actual_min": [
    -40,
    -30,
    -0.10000000149011612
  ],
  "deviation_max": [
    0,
    0,
    0.20000076293945312
  ],
  "deviation_min": [
    0,
    0,
    -0.10000000149011612
  ],
  "max_abs_deviation_mm": 0.20000076293945312,
  "tolerance_mm": 0.1
}
2
mass_props
fail
volume off by 28.8%
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 51888.59,
  "center_of_mass": [
    0,
    0,
    6.31
  ],
  "tolerance_pct": 1
}

details: {
  "center_of_mass": {
    "actual": [
      5.668939411106751e-19,
      -4.703448167652633e-18,
      6.852769900939288
    ],
    "bbox_diagonal_mm": 101.66066116240894,
    "deviation": [
      5.668939411106751e-19,
      -4.703448167652633e-18,
      0.5427699009392883
    ],
    "max_abs_deviation_mm": 0.5427699009392883,
    "pass": true,
    "spec": [
      0,
      0,
      6.31
    ],
    "tolerance_mm": 1.0166066116240895
  },
  "volume": {
    "actual_mm3": 66847.79960714665,
    "deviation_pct": 28.829477939459625,
    "pass": false,
    "spec_mm3": 51888.59,
    "tolerance_pct": 1
  }
}
3
hole_count
fail
found 0/1 holes of ⌀18mm
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 18,
  "expected": 1,
  "diameter_tolerance_mm": 0.1
}

details: {
  "actual": 0,
  "diameter_mm": 18,
  "diameter_tolerance_mm": 0.1,
  "expected": 1,
  "found": []
}
4
hole_positions
fail
1/1 mispositioned
params + details 
params: {
  "type": "hole_positions",
  "diameter_mm": 18,
  "positions": [
    [
      0,
      0,
      0
    ]
  ],
  "tolerance_mm": 0.2
}

details: {
  "diameter_mm": 18,
  "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
hole_count
fail
found 0/4 holes of ⌀6mm
params + details 
params: {
  "type": "hole_count",
  "diameter_mm": 6,
  "expected": 4,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 0,
  "diameter_mm": 6,
  "diameter_tolerance_mm": 0.05,
  "expected": 4,
  "found": []
}
6
hole_positions
fail
4/4 mispositioned
params + details 
params: {
  "type": "hole_positions",
  "diameter_mm": 6,
  "positions": [
    [
      28,
      22,
      0
    ],
    [
      -28,
      22,
      0
    ],
    [
      -28,
      -22,
      0
    ],
    [
      28,
      -22,
      0
    ]
  ],
  "tolerance_mm": 0.2
}

details: {
  "diameter_mm": 6,
  "per_expected": [
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        28,
        22
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        -28,
        22
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        -28,
        -22
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        28,
        -22
      ]
    }
  ],
  "tolerance_mm": 0.2,
  "unmatched_extras": []
}
7
step_roundtrip
pass
params + details 
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          30,
          18
        ],
        "original_min": [
          -40,
          -30,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          30,
          18
        ],
        "roundtripped_min": [
          -40,
          -30,
          0
        ],
        "tolerance_mm": 1.016070863670443
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 57600,
        "pass": true,
        "roundtripped_mm3": 57600
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          9,
          9,
          18.200000762939453
        ],
        "original_min": [
          -9,
          -9,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          9,
          9,
          18.200000762939453
        ],
        "roundtripped_min": [
          -9,
          -9,
          0
        ],
        "tolerance_mm": 0.31292811119664476
      },
      "index": 1,
      "pass": true,
      "volume": {
        "deviation_pct": 0.48152632084046826,
        "original_mm3": 4623.899851842212,
        "pass": true,
        "roundtripped_mm3": 4601.634557006289
      }
    },
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          9,
          9,
          18.100000381469727
        ],
        "original_min": [
          -9,
          -9,
          -0.10000000149011612
        ],
        "pass": true,
        "roundtripped_max": [
          9,
          9,
          18.100000381469727
        ],
        "roundtripped_min": [
          -9,
          -9,
          -0.10000000149011612
        ],
        "tolerance_mm": 0.312928108986671
      },
      "index": 2,
      "pass": true,
      "volume": {
        "deviation_pct": 0.4815263208404931,
        "original_mm3": 4623.8997553044355,
        "pass": true,
        "roundtripped_mm3": 4601.6344609333655
      }
    }
  ],
  "tolerance_pct": 1
}

Tool calls

0
open_document
ok
2ms
args
{}
1
create
err
6ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "difference",
  "name": "Stepped Boss Plate",
  "params": {
    "children": [
      {
        "type": "union",
        "params": {
          "children": [
            {
              "type": "translate",
              "params": {
                "x": -40,
                "y": -30,
                "z": 0,
                "child": {
                  "type": "cube",
                  "params": {
                    "x": 80,
                    "y": 60,
                    "z": 10
                  }
                }
              }
            },
            {
              "type": "translate",
              "params": {
                "x": -20,
                "y": -15,
                "z": 10,
                "child": {
                  "type": "cube",
                  "params": {
                    "x": 40,
                    "y": 30,
                    "z": 8
                  }
                }
              }
            }
          ]
        }
      },
      {
        "type": "translate",
        "params": {
          "x": 0,
          "y": 0,
          "z": -0.1,
          "child": {
            "type": "cylinder",
            "params": {
              "radius": 9,
              "height": 18.2
            }
          }
        }
      },
      {
        "type": "translate",
        "params": {
          "x": 28,
          "y": 22,
          "z": -0.1,
          "child": {
            "type": "cylinder",
            "params": {
              "radius": 3,
              "height": 10.2
            }
          }
        }
      },
      {
        "type": "translate",
        "params": {
          "x": -28,
          "y": 22,
          "z": -0.1,
          "child": {
            "type": "cylinder",
            "params": {
              "radius": 3,
              "height": 10.2
            }
          }
        }
      },
      {
        "type": "translate",
        "params": {
          "x": -28,
          "y": -22,
          "z": -0.1,
          "child": {
            "type": "cylinder",
            "params": {
              "radius": 3,
              "height": 10.2
            }
          }
        }
      },
      {
        "type": "translate",
        "params": {
          "x": 28,
          "y": -22,
          "z": -0.1,
          "child": {
            "type": "cylinder",
            "params": {
              "radius": 3,
              "height": 10.2
            }
          }
        }
      }
    ]
  }
}
2
read
ok
4ms
args
{
  "document_id": "doc_1781218613779_1"
}
3
create_cad_loon
ok
10ms
args
{
  "source": "[root\n  [difference\n    [translate 28 -22 -0.1 [cylinder 3 10.2]]\n    [difference\n      [translate -28 -22 -0.1 [cylinder 3 10.2]]\n      [difference\n        [translate -28 22 -0.1 [cylinder 3 10.2]]\n        [difference\n          [translate 28 22 -0.1 [cylinder 3 10.2]]\n          [difference\n            [translate 0 0 -0.1 [cylinder 9 18.2]]\n            [union\n              [translate -20 -15 10 [cube 40 30 8]]\n              [translate -40 -30 0 [cube 80 60 10]]]]]]]]\n  \"steel\"]",
  "format": "json"
}
4
create
err
4ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "cube",
  "name": "base",
  "params": {
    "x": 80,
    "y": 60,
    "z": 10
  }
}
5
create
ok
5ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "cube",
  "name": "base",
  "params": {
    "size": {
      "x": 80,
      "y": 60,
      "z": 10
    }
  }
}
6
create
ok
6ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "translate",
  "name": "base_pos",
  "parent_part_id": "1",
  "params": {
    "offset": {
      "x": -40,
      "y": -30,
      "z": 0
    },
    "child": 1
  }
}
7
create
ok
6ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "cube",
  "name": "boss",
  "params": {
    "size": {
      "x": 40,
      "y": 30,
      "z": 8
    }
  }
}
8
create
ok
3ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "translate",
  "parent_part_id": "3",
  "params": {
    "offset": {
      "x": -20,
      "y": -15,
      "z": 10
    },
    "child": 3
  }
}
9
read
ok
3ms
args
{
  "document_id": "doc_1781218613779_1"
}
10
read
ok
3ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "2"
}
11
delete
ok
5ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "1"
}
12
delete
ok
1ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "2"
}
13
delete
ok
1ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "3"
}
14
delete
ok
1ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "4"
}
15
create
ok
3ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "cube",
  "name": "base",
  "params": {
    "size": {
      "x": 80,
      "y": 60,
      "z": 10
    }
  }
}
16
create
ok
3ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "translate",
  "parent_part_id": "1",
  "params": {
    "offset": {
      "x": -40,
      "y": -30,
      "z": 0
    },
    "child": 1
  }
}
17
read
ok
3ms
args
{
  "document_id": "doc_1781218613779_1"
}
18
delete
ok
2ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "1"
}
19
delete
ok
1ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "2"
}
20
create
ok
3ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "cube",
  "name": "base",
  "params": {
    "size": {
      "x": 80,
      "y": 60,
      "z": 10
    }
  }
}
21
create
ok
2ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "translate",
  "parent_part_id": "1",
  "params": {
    "offset": {
      "x": -40,
      "y": -30,
      "z": 0
    },
    "child": 1
  }
}
22
read
ok
1ms
args
{
  "document_id": "doc_1781218613779_1"
}
23
read
ok
2ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "2"
}
24
delete
ok
3ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "1"
}
25
read
ok
2ms
args
{
  "document_id": "doc_1781218613779_1"
}
26
read
ok
3ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "2"
}
27
create
ok
2ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "cube",
  "name": "boss",
  "params": {
    "size": {
      "x": 40,
      "y": 30,
      "z": 8
    }
  }
}
28
create
ok
3ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "translate",
  "parent_part_id": "3",
  "params": {
    "offset": {
      "x": -20,
      "y": -15,
      "z": 10
    },
    "child": 3
  }
}
29
create
ok
3ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "union",
  "name": "base+boss",
  "params": {
    "left": 2,
    "right": 4
  }
}
30
read
ok
3ms
args
{
  "document_id": "doc_1781218613779_1"
}
31
delete
ok
2ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "2"
}
32
delete
ok
1ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "3"
}
33
delete
ok
1ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "4"
}
34
read
ok
3ms
args
{
  "document_id": "doc_1781218613779_1",
  "part_id": "5"
}
35
create
err
4ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "cylinder",
  "name": "bore",
  "params": {
    "radius": 9,
    "height": 18.2
  }
}
36
create
ok
3ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "cylinder",
  "name": "bore",
  "params": {
    "radius": 9,
    "height": 18.2,
    "segments": 64
  }
}
37
create
ok
3ms
args
{
  "document_id": "doc_1781218613779_1",
  "type": "translate",
  "parent_part_id": "6",
  "params": {
    "offset": {
      "x": 0,
      "y": 0,
      "z": -0.1
    },
    "child": 6
  }
}
38
get_document
ok
1ms
args
{
  "document_id": "doc_1781218613779_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260611T225653Z-b015.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "base",
      "op": {
        "type": "Cube",
        "size": {
          "x": 80,
          "y": 60,
          "z": 10
        }
      }
    },
    "2": {
      "id": 2,
      "name": null,
      "op": {
        "type": "Translate",
        "child": 1,
        "offset": {
          "x": -40,
          "y": -30,
          "z": 0
        }
      }
    },
    "3": {
      "id": 3,
      "name": "boss",
      "op": {
        "type": "Cube",
        "size": {
          "x": 40,
          "y": 30,
          "z": 8
        }
      }
    },
    "4": {
      "id": 4,
      "name": null,
      "op": {
        "type": "Translate",
        "child": 3,
        "offset": {
          "x": -20,
          "y": -15,
          "z": 10
        }
      }
    },
    "5": {
      "id": 5,
      "name": "base+boss",
      "op": {
        "type": "Union",
        "left": 2,
        "right": 4
      }
    },
    "6": {
      "id": 6,
      "name": "bore",
      "op": {
        "type": "Cylinder",
        "radius": 9,
        "height": 18.2,
        "segments": 64
      }
    },
    "7": {
      "id": 7,
      "name": null,
      "op": {
        "type": "Translate",
        "child": 6,
        "offset": {
          "x": 0,
          "y": 0,
          "z": -0.1
        }
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 5,
      "material": "default"
    },
    {
      "root": 6,
      "material": "default"
    },
    {
      "root": 7,
      "material": "default"
    }
  ]
}
mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

generated 2026-06-19T01:47:56.240Z · static site, regenerate with npm run build -w @mecheval/leaderboard