run 20260428T212747Z-b3e1

Summary

Prompt

Make an L-shaped mounting bracket. The base lies in the XY plane, occupying x in [0, 50], y in [0, 30], z in [0, 4] (50mm long, 30mm wide, 4mm thick). A vertical wall stands on the +X edge: x in [46, 50], y in [0, 30], z in [4, 30] (4mm thick, 30mm wide, rising to z = 30). Two through-holes of diameter 5mm pierce the base parallel to Z, centered at (10, 15) and (35, 15) on the top face. Output a single solid.

Checks

params: {
  "type": "valid_solid"
}

details: {
  "error": "parse: Invalid JSON vcad file: invalid value: expected key to be a number in quotes at line 4 column 5",
  "reason": "fatal evaluation error"
}

params: {
  "type": "bbox",
  "min": [
    0,
    0,
    0
  ],
  "max": [
    50,
    30,
    30
  ],
  "tolerance_mm": 0.1
}

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

params: {
  "type": "mass_props",
  "volume_mm3": 8962.92,
  "tolerance_pct": 0.5
}

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

params: {
  "type": "hole_count",
  "diameter_mm": 5,
  "expected": 2,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 0,
  "diameter_mm": 5,
  "diameter_tolerance_mm": 0.05,
  "expected": 2,
  "found": []
}

params: {
  "type": "hole_positions",
  "diameter_mm": 5,
  "positions": [
    [
      10,
      15,
      0
    ],
    [
      35,
      15,
      0
    ]
  ],
  "tolerance_mm": 0.1
}

details: {
  "diameter_mm": 5,
  "per_expected": [
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        10,
        15
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        35,
        15
      ]
    }
  ],
  "tolerance_mm": 0.1,
  "unmatched_extras": []
}

params: {
  "type": "step_roundtrip",
  "tolerance_pct": 0.1
}

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

Tool calls

{
  "model": "gpt-4o-mini",
  "max_tokens": 8000,
  "system_chars": 1632,
  "user_chars": 470
}

What the model built

.vcad source

{
  "version": "0.1",
  "nodes": {
    "base": {
      "id": "base",
      "name": "Base",
      "op": {
        "type": "Cube",
        "size": {
          "x": 50,
          "y": 30,
          "z": 4
        }
      }
    },
    "wall": {
      "id": "wall",
      "name": "Wall",
      "op": {
        "type": "Cube",
        "size": {
          "x": 4,
          "y": 30,
          "z": 26
        }
      }
    },
    "hole1": {
      "id": "hole1",
      "name": "Hole 1",
      "op": {
        "type": "Cylinder",
        "radius": 2.5,
        "height": 4,
        "segments": 32
      }
    },
    "hole2": {
      "id": "hole2",
      "name": "Hole 2",
      "op": {
        "type": "Cylinder",
        "radius": 2.5,
        "height": 4,
        "segments": 32
      }
    },
    "base_with_holes": {
      "id": "base_with_holes",
      "name": "Base with Holes",
      "op": {
        "type": "Difference",
        "left": "base",
        "right": "hole1"
      }
    },
    "final_bracket": {
      "id": "final_bracket",
      "name": "Final Bracket",
      "op": {
        "type": "Union",
        "left": "base_with_holes",
        "right": "wall"
      }
    },
    "translated_hole2": {
      "id": "translated_hole2",
      "name": "Translated Hole 2",
      "op": {
        "type": "Translate",
        "child": "hole2",
        "offset": {
          "x": 35,
          "y": 15,
          "z": 0
        }
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": "final_bracket",
      "material": "default"
    }
  ]
}

generated 2026-06-19T01:47:55.628Z · static site, regenerate with npm run build -w @mecheval/leaderboard