← mecheval / run / a2-mounting-rail-01 / openai-direct-gpt-5 / 20260428T214741Z-0fad

run 20260428T214741Z-0fad

a2-mounting-rail-01 · openai-direct-gpt-5

Summary

statusPASS
score1.00 (6/6)
submissionself-run
modelopenai-direct-gpt-5 (openai)
started2026-04-28T21:47:41.778Z
ended2026-04-28T21:48:04.003Z
tokens641 in · 2,189 out · 2,830 total
wallclock22.1s
tool calls1
task hashe375cec77275714a…
vcad hash4f99b51d2b11ce18…

Prompt

Make a long rectangular mounting rail 100mm long (X) × 20mm wide (Y) × 8mm thick (Z). Center it in X and Y, with the bottom face on the XY plane (z = 0 to z = 8). Drill three through-holes of diameter 6mm, axes parallel to Z, evenly spaced along the centerline (y = 0) at x = -40, x = 0, and x = 40. 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": [
    -50,
    -10,
    0
  ],
  "max": [
    50,
    10,
    8
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    50,
    10,
    8
  ],
  "actual_min": [
    -50,
    -10,
    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": 15321.42,
  "tolerance_pct": 0.5
}

details: {
  "volume": {
    "actual_mm3": 15325.768021011163,
    "deviation_pct": 0.02837870779055027,
    "pass": true,
    "spec_mm3": 15321.42,
    "tolerance_pct": 0.5
  }
}
3
hole_count
pass
params + details
params: {
  "type": "hole_count",
  "diameter_mm": 6,
  "expected": 3,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 3,
  "diameter_mm": 6,
  "diameter_tolerance_mm": 0.05,
  "expected": 3,
  "found": [
    [
      -40,
      0,
      6
    ],
    [
      0,
      0,
      6
    ],
    [
      40,
      0,
      6
    ]
  ]
}
4
hole_positions
pass
params + details
params: {
  "type": "hole_positions",
  "diameter_mm": 6,
  "positions": [
    [
      -40,
      0,
      0
    ],
    [
      0,
      0,
      0
    ],
    [
      40,
      0,
      0
    ]
  ],
  "tolerance_mm": 0.15
}

details: {
  "diameter_mm": 6,
  "per_expected": [
    {
      "distance_mm": 0,
      "matched_hole": [
        -40,
        0
      ],
      "pass": true,
      "spec_xy": [
        -40,
        0
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        0,
        0
      ],
      "pass": true,
      "spec_xy": [
        0,
        0
      ]
    },
    {
      "distance_mm": 0,
      "matched_hole": [
        40,
        0
      ],
      "pass": true,
      "spec_xy": [
        40,
        0
      ]
    }
  ],
  "tolerance_mm": 0.15,
  "unmatched_extras": []
}
5
step_roundtrip
pass
params + details
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 0.5
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          50,
          10,
          8
        ],
        "original_min": [
          -50,
          -10,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          50,
          10,
          8
        ],
        "roundtripped_min": [
          -50,
          -10,
          0
        ],
        "tolerance_mm": 0.5114684741017769
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 1.5429479432076097e-13,
        "original_mm3": 15325.768021011163,
        "pass": true,
        "roundtripped_mm3": 15325.768021011187
      }
    }
  ],
  "tolerance_pct": 0.5
}

Tool calls

0
openai.chat.completions.create
ok
22147ms
args
{
  "model": "gpt-5",
  "max_tokens": 8000,
  "system_chars": 1674,
  "user_chars": 384
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260428T214741Z-0fad.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": { "id": 1, "name": "BaseCube", "op": { "type": "Cube", "size": { "x": 100, "y": 20, "z": 8 } } },
    "2": { "id": 2, "name": "CenteredBase", "op": { "type": "Translate", "child": 1, "offset": { "x": -50, "y": -10, "z": 0 } } },
    "3": { "id": 3, "name": "HoleCylinder", "op": { "type": "Cylinder", "radius": 3, "height": 8, "segments": 32 } },
    "4": { "id": 4, "name": "HoleLeft", "op": { "type": "Translate", "child": 3, "offset": { "x": -40, "y": 0, "z": 0 } } },
    "5": { "id": 5, "name": "HoleCenter", "op": { "type": "Translate", "child": 3, "offset": { "x": 0, "y": 0, "z": 0 } } },
    "6": { "id": 6, "name": "HoleRight", "op": { "type": "Translate", "child": 3, "offset": { "x": 40, "y": 0, "z": 0 } } },
    "7": { "id": 7, "name": "HolesUnion1", "op": { "type": "Union", "left": 4, "right": 5 } },
    "8": { "id": 8, "name": "HolesUnion2", "op": { "type": "Union", "left": 7, "right": 6 } },
    "9": { "id": 9, "name": "RailWithHoles", "op": { "type": "Difference", "left": 2, "right": 8 } }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    { "root": 9, "material": "default" }
  ]
}

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