run 20260428T213028Z-e5a4

Summary

Prompt

Make a flat T-shaped bracket lying in the XY plane, 5mm thick (z = 0 to z = 5). Horizontal bar: x in [-30, 30], y in [0, 20]. Vertical stem extending in +Y from the middle of the horizontal bar: x in [-10, 10], y in [20, 50]. Drill three through-holes of diameter 5mm, axes parallel to Z: one at (0, 45) at the top of the stem, and two on the horizontal bar at (-25, 10) and (25, 10). Output a single solid.

Checks

params: {
  "type": "valid_solid"
}

details: {
  "error": "parse: Invalid JSON vcad file: invalid type: string \"1\", expected u64 at line 5 column 15",
  "reason": "fatal evaluation error"
}

params: {
  "type": "bbox",
  "min": [
    -30,
    0,
    0
  ],
  "max": [
    30,
    50,
    5
  ],
  "tolerance_mm": 0.1
}

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

params: {
  "type": "mass_props",
  "volume_mm3": 8705.48,
  "tolerance_pct": 0.5
}

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

params: {
  "type": "hole_count",
  "diameter_mm": 5,
  "expected": 3,
  "diameter_tolerance_mm": 0.05
}

details: {
  "actual": 0,
  "diameter_mm": 5,
  "diameter_tolerance_mm": 0.05,
  "expected": 3,
  "found": []
}

params: {
  "type": "hole_positions",
  "diameter_mm": 5,
  "positions": [
    [
      0,
      45,
      0
    ],
    [
      -25,
      10,
      0
    ],
    [
      25,
      10,
      0
    ]
  ],
  "tolerance_mm": 0.15
}

details: {
  "diameter_mm": 5,
  "per_expected": [
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        0,
        45
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        -25,
        10
      ]
    },
    {
      "pass": false,
      "reason": "no candidate cylindrical feature of this diameter remained unmatched",
      "spec_xy": [
        25,
        10
      ]
    }
  ],
  "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": 467
}

What the model built

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": "1",
      "name": "T_Shaped_Bracket",
      "op": {
        "type": "Union",
        "left": {
          "type": "Cube",
          "size": {
            "x": 60,
            "y": 50,
            "z": 5
          }
        },
        "right": {
          "type": "Cube",
          "size": {
            "x": 20,
            "y": 30,
            "z": 5
          }
        }
      }
    },
    "2": {
      "id": "2",
      "name": "Hole_1",
      "op": {
        "type": "Cylinder",
        "radius": 2.5,
        "height": 5,
        "segments": 32
      }
    },
    "3": {
      "id": "3",
      "name": "Hole_2",
      "op": {
        "type": "Cylinder",
        "radius": 2.5,
        "height": 5,
        "segments": 32
      }
    },
    "4": {
      "id": "4",
      "name": "Hole_3",
      "op": {
        "type": "Cylinder",
        "radius": 2.5,
        "height": 5,
        "segments": 32
      }
    },
    "5": {
      "id": "5",
      "name": "T_Brack_With_Holes",
      "op": {
        "type": "Difference",
        "left": "1",
        "right": {
          "type": "Union",
          "left": {
            "type": "Translate",
            "child": "2",
            "offset": {
              "x": 0,
              "y": 45,
              "z": 0
            }
          },
          "right": {
            "type": "Union",
            "left": {
              "type": "Translate",
              "child": "3",
              "offset": {
                "x": -25,
                "y": 10,
                "z": 0
              }
            },
            "right": {
              "type": "Translate",
              "child": "4",
              "offset": {
                "x": 25,
                "y": 10,
                "z": 0
              }
            }
          }
        }
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": "5",
      "material": "default"
    }
  ]
}

generated 2026-06-19T01:47:55.771Z · static site, regenerate with npm run build -w @mecheval/leaderboard