run 20260428T213416Z-475d

Summary

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

params: {
  "type": "valid_solid"
}

details: {
  "error": "parse: Invalid JSON vcad file: invalid type: map, expected u64 at line 89 column 5",
  "reason": "fatal evaluation error"
}

params: {
  "type": "bbox",
  "min": [
    -50,
    -10,
    0
  ],
  "max": [
    50,
    10,
    8
  ],
  "tolerance_mm": 0.1
}

details: {
  "reason": "no valid solid to measure"
}

params: {
  "type": "mass_props",
  "volume_mm3": 15321.42,
  "tolerance_pct": 0.5
}

details: {
  "reason": "no valid solid to measure"
}

params: {
  "type": "hole_count",
  "diameter_mm": 6,
  "expected": 3,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 0,
  "diameter_mm": 6,
  "diameter_tolerance_mm": 0.05,
  "expected": 3,
  "found": []
}

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": [
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        -40,
        0
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        0,
        0
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        40,
        0
      ]
    }
  ],
  "tolerance_mm": 0.15,
  "unmatched_extras": []
}

params: {
  "type": "step_roundtrip",
  "tolerance_pct": 0.5
}

details: {
  "reason": "no valid solid to round-trip"
}

Tool calls

{
  "model": "gpt-4o-mini",
  "max_tokens": 8000,
  "system_chars": 1632,
  "user_chars": 384
}

What the model built

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "Mounting Rail",
      "op": {
        "type": "Cube",
        "size": {
          "x": 100,
          "y": 20,
          "z": 8
        }
      }
    },
    "2": {
      "id": 2,
      "name": "Drill Hole 1",
      "op": {
        "type": "Cylinder",
        "radius": 3,
        "height": 8,
        "segments": 32
      }
    },
    "3": {
      "id": 3,
      "name": "Drill Hole 2",
      "op": {
        "type": "Cylinder",
        "radius": 3,
        "height": 8,
        "segments": 32
      }
    },
    "4": {
      "id": 4,
      "name": "Drill Hole 3",
      "op": {
        "type": "Cylinder",
        "radius": 3,
        "height": 8,
        "segments": 32
      }
    },
    "5": {
      "id": 5,
      "name": "Holes",
      "op": {
        "type": "Union",
        "left": {
          "type": "Difference",
          "left": 1,
          "right": {
            "type": "Union",
            "left": {
              "type": "Translate",
              "child": 2,
              "offset": {
                "x": -40,
                "y": 0,
                "z": 0
              }
            },
            "right": {
              "type": "Union",
              "left": {
                "type": "Translate",
                "child": 3,
                "offset": {
                  "x": 0,
                  "y": 0,
                  "z": 0
                }
              },
              "right": {
                "type": "Translate",
                "child": 4,
                "offset": {
                  "x": 40,
                  "y": 0,
                  "z": 0
                }
              }
            }
          }
        }
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 5,
      "material": "default"
    }
  ]
}

generated 2026-06-19T01:47:55.661Z · static site, regenerate with npm run build -w @mecheval/leaderboard