run 20260428T232743Z-1d98

Summary

Prompt

Make a single solid that is the union of two cylinders intersecting at right angles. Vertical cylinder: outside diameter 20mm, length 40mm, axis along Z, base on the XY plane (z = 0 to z = 40), centered on the Z axis. Horizontal cylinder: outside diameter 20mm, length 40mm, axis along the X axis, centered at (0, 0, 20) (so it passes through the middle of the vertical cylinder). The two cylinders are merged into one solid (their intersection region counts only once).

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": [
    -20,
    -10,
    0
  ],
  "max": [
    20,
    10,
    40
  ],
  "tolerance_mm": 0.2
}

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

params: {
  "type": "mass_props",
  "volume_mm3": 19799.41,
  "tolerance_pct": 1.5
}

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

params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1.5
}

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

Tool calls

{
  "model": "gpt-4o-mini",
  "max_tokens": 8000,
  "system_chars": 1674,
  "user_chars": 530
}

What the model built

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": "1",
      "name": "VerticalCylinder",
      "op": {
        "type": "Cylinder",
        "radius": 10,
        "height": 40,
        "segments": 32
      }
    },
    "2": {
      "id": "2",
      "name": "HorizontalCylinder",
      "op": {
        "type": "Translate",
        "child": {
          "type": "Cylinder",
          "radius": 10,
          "height": 40,
          "segments": 32
        },
        "offset": {
          "x": 0,
          "y": 0,
          "z": 20
        }
      }
    },
    "3": {
      "id": "3",
      "name": "UnionOfCylinders",
      "op": {
        "type": "Union",
        "left": "1",
        "right": "2"
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": "3",
      "material": "default"
    }
  ]
}

generated 2026-06-19T01:47:55.823Z · static site, regenerate with npm run build -w @mecheval/leaderboard