run 20260429T120218Z-f865

Summary

Prompt

Make a hollow square tube. The outer cross-section is a 40mm × 40mm square; the inner cavity is a 28mm × 28mm square, concentric with the outer. The cavity passes all the way through. The tube is 80mm long along Z, with the bottom face on the XY plane (so it spans x in [-20, 20], y in [-20, 20], z in [0, 80] for the outer envelope). The inner cavity spans x in [-14, 14], y in [-14, 14], z in [0, 80]. Wall thickness is 6mm uniformly. 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": [
    -20,
    -20,
    0
  ],
  "max": [
    20,
    20,
    80
  ],
  "tolerance_mm": 0.05
}

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

params: {
  "type": "mass_props",
  "volume_mm3": 65280,
  "center_of_mass": [
    0,
    0,
    40
  ],
  "tolerance_pct": 0.5
}

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

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

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

Tool calls

{
  "model": "claude-haiku-4-5-20251001",
  "max_tokens": 8000,
  "system_chars": 1674,
  "user_chars": 524
}

What the model built

.vcad source

{
  "version": "0.1",
  "nodes": {
    "outer_cube": {
      "id": "outer_cube",
      "name": "Outer cube",
      "op": {
        "type": "Cube",
        "size": {"x": 40, "y": 40, "z": 80}
      }
    },
    "outer_centered": {
      "id": "outer_centered",
      "name": "Outer cube centered",
      "op": {
        "type": "Translate",
        "child": "outer_cube",
        "offset": {"x": -20, "y": -20, "z": 0}
      }
    },
    "inner_cube": {
      "id": "inner_cube",
      "name": "Inner cube",
      "op": {
        "type": "Cube",
        "size": {"x": 28, "y": 28, "z": 80}
      }
    },
    "inner_centered": {
      "id": "inner_centered",
      "name": "Inner cube centered",
      "op": {
        "type": "Translate",
        "child": "inner_cube",
        "offset": {"x": -14, "y": -14, "z": 0}
      }
    },
    "hollow_tube": {
      "id": "hollow_tube",
      "name": "Hollow square tube",
      "op": {
        "type": "Difference",
        "left": "outer_centered",
        "right": "inner_centered"
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": "hollow_tube",
      "material": "default"
    }
  ]
}

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