← mecheval / run / a4-rounded-bar-01 / claude-direct-claude-sonnet-4-6 / 20260429T120642Z-2ed6

run 20260429T120642Z-2ed6

a4-rounded-bar-01 · claude-direct-claude-sonnet-4-6

Summary

statusPASS
score1.00 (4/4)
submissionself-run
modelclaude-direct-claude-sonnet-4-6 (anthropic)
started2026-04-29T12:06:42.074Z
ended2026-04-29T12:06:48.431Z
tokens735 in · 543 out · 1,278 total
wallclock6.3s
tool calls1
task hash7d784df0d0a20935…
vcad hash1ee776b60bcb4e0f…

Prompt

Make a flat bar with a stadium-shaped (rectangle with semicircular ends) footprint, extruded 10mm along Z. Total end-to-end length is 80mm along X; total width is 20mm along Y. The footprint is the union of a 60mm × 20mm rectangle (x in [-30, 30], y in [-10, 10]) and two semicircles of radius 10mm centered at (-30, 0) and (30, 0). The bottom face sits on the XY plane (z = 0 to z = 10). Output a single solid (no holes or other features).

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,
    -10,
    0
  ],
  "max": [
    40,
    10,
    10
  ],
  "tolerance_mm": 0.2
}

details: {
  "actual_max": [
    40,
    10,
    10
  ],
  "actual_min": [
    -40,
    -10,
    0
  ],
  "deviation_max": [
    0,
    0,
    0
  ],
  "deviation_min": [
    0,
    0,
    0
  ],
  "max_abs_deviation_mm": 0,
  "tolerance_mm": 0.2
}
2
mass_props
pass
params + details
params: {
  "type": "mass_props",
  "volume_mm3": 15141.59,
  "center_of_mass": [
    0,
    0,
    5
  ],
  "tolerance_pct": 1
}

details: {
  "center_of_mass": {
    "actual": [
      8.191724971631091e-15,
      2.7069995799438013e-17,
      4.999999999999997
    ],
    "bbox_diagonal_mm": 83.06623862918075,
    "deviation": [
      8.191724971631091e-15,
      2.7069995799438013e-17,
      -2.6645352591003757e-15
    ],
    "max_abs_deviation_mm": 8.191724971631091e-15,
    "pass": true,
    "spec": [
      0,
      0,
      5
    ],
    "tolerance_mm": 0.8306623862918074
  },
  "volume": {
    "actual_mm3": 15136.54874536396,
    "deviation_pct": 0.033294090224608656,
    "pass": true,
    "spec_mm3": 15141.59,
    "tolerance_pct": 1
  }
}
3
step_roundtrip
pass
params + details
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          40,
          10,
          10
        ],
        "original_min": [
          -40,
          -10,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          40,
          10,
          10
        ],
        "roundtripped_min": [
          -40,
          -10,
          0
        ],
        "tolerance_mm": 0.8306623862918074
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0.06548108557483903,
        "original_mm3": 15136.54874536396,
        "pass": true,
        "roundtripped_mm3": 15126.63716892693
      }
    }
  ],
  "tolerance_pct": 1
}

Tool calls

0
anthropic.messages.create
ok
6273ms
args
{
  "model": "claude-sonnet-4-6",
  "max_tokens": 8000,
  "system_chars": 1674,
  "user_chars": 500
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260429T120642Z-2ed6.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "center_box",
      "op": {"type": "Cube", "size": {"x": 60, "y": 20, "z": 10}}
    },
    "2": {
      "id": 2,
      "name": "center_box_translated",
      "op": {"type": "Translate", "child": 1, "offset": {"x": -30, "y": -10, "z": 0}}
    },
    "3": {
      "id": 3,
      "name": "left_cylinder",
      "op": {"type": "Cylinder", "radius": 10, "height": 10, "segments": 64}
    },
    "4": {
      "id": 4,
      "name": "left_cylinder_translated",
      "op": {"type": "Translate", "child": 3, "offset": {"x": -30, "y": 0, "z": 0}}
    },
    "5": {
      "id": 5,
      "name": "right_cylinder",
      "op": {"type": "Cylinder", "radius": 10, "height": 10, "segments": 64}
    },
    "6": {
      "id": 6,
      "name": "right_cylinder_translated",
      "op": {"type": "Translate", "child": 5, "offset": {"x": 30, "y": 0, "z": 0}}
    },
    "7": {
      "id": 7,
      "name": "union_box_left",
      "op": {"type": "Union", "left": 2, "right": 4}
    },
    "8": {
      "id": 8,
      "name": "stadium_bar",
      "op": {"type": "Union", "left": 7, "right": 6}
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [{"root": 8, "material": "default"}]
}

generated 2026-06-19T01:47:56.119Z · static site, regenerate with npm run build -w @mecheval/leaderboard