← mecheval / run / a3-tangent-cylinders-01 / claude-mcp-claude-opus-4-7 / 20260611T220816Z-c1d2

run 20260611T220816Z-c1d2

a3-tangent-cylinders-01 · claude-mcp-claude-opus-4-7

Summary

statusPASS
score1.00 (4/4)
submissionself-run
modelclaude-mcp-claude-opus-4-7 (anthropic)
started2026-06-11T22:08:16.581Z
ended2026-06-11T22:09:46.827Z
tokens435,402 in · 3,496 out · 438,898 total
wallclock90.2s
tool calls27
task hash3c9319f74706d04c…
vcad hash7299a1b2af1f2b32…

Prompt

Make a single solid consisting of two cylinders fused together. Big cylinder: outside diameter 50mm, axis along Z, base on the XY plane (z = 0 to z = 40), centered on the Z axis. Small cylinder: outside diameter 10mm, axis along Z, base on the XY plane (z = 0 to z = 40), positioned so that its outer surface is externally tangent to the big cylinder's outer surface on the +X side. The two cylinders share exactly one tangent line (no overlap, no gap). Output a single solid (the union of the two cylinders).

Checks

0
valid_solid
pass
params + details 
params: {
  "type": "valid_solid"
}

details: {
  "root_count": 1,
  "solids_produced": 1
}
1
bbox
pass
params + details 
params: {
  "type": "bbox",
  "min": [
    -25,
    -25,
    0
  ],
  "max": [
    35,
    25,
    40
  ],
  "tolerance_mm": 0.2
}

details: {
  "actual_max": [
    35,
    25,
    40
  ],
  "actual_min": [
    -25,
    -25,
    0
  ],
  "deviation_max": [
    0,
    0,
    0
  ],
  "deviation_min": [
    0,
    0,
    0
  ],
  "max_abs_deviation_mm": 0,
  "tolerance_mm": 0.2
}
2
mass_props
pass
params + details 
params: {
  "type": "mass_props",
  "volume_mm3": 81681.41,
  "tolerance_pct": 1
}

details: {
  "volume": {
    "actual_mm3": 81550.2610428139,
    "deviation_pct": 0.1605615735405425,
    "pass": true,
    "spec_mm3": 81681.41,
    "tolerance_pct": 1
  }
}
3
step_roundtrip
pass
params + details 
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 1
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          35,
          25,
          40
        ],
        "original_min": [
          -25,
          -25,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          35,
          25,
          40
        ],
        "roundtripped_min": [
          -25,
          -25,
          0
        ],
        "tolerance_mm": 0.8774964387392121
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0.4815248605890577,
        "original_mm3": 81550.2610428139,
        "pass": true,
        "roundtripped_mm3": 81157.57626201748
      }
    }
  ],
  "tolerance_pct": 1
}

Tool calls

0
open_document
ok
2ms
args
{}
1
create
err
6ms
args
{
  "document_id": "doc_1781215696756_1",
  "type": "union",
  "name": "Tangent Cylinders",
  "params": {
    "children": [
      {
        "type": "translate",
        "params": {
          "x": 0,
          "y": 0,
          "z": 0,
          "child": {
            "type": "cylinder",
            "params": {
              "radius": 25,
              "height": 40
            }
          }
        }
      },
      {
        "type": "translate",
        "params": {
          "x": 30,
          "y": 0,
          "z": 0,
          "child": {
            "type": "cylinder",
            "params": {
              "radius": 5,
              "height": 40
            }
          }
        }
      }
    ]
  }
}
2
create_cad_loon
ok
11ms
args
{
  "source": "[union [translate 30 0 0 [cylinder 5 40]] [cylinder 25 40]]",
  "format": "json"
}
3
create
err
4ms
args
{
  "document_id": "doc_1781215696756_1",
  "type": "cylinder",
  "name": "Big Cylinder",
  "params": {
    "radius": 25,
    "height": 40
  }
}
4
create
ok
4ms
args
{
  "document_id": "doc_1781215696756_1",
  "type": "cylinder",
  "name": "Big Cylinder",
  "params": {
    "radius": 25,
    "height": 40,
    "segments": 64
  }
}
5
create
ok
4ms
args
{
  "document_id": "doc_1781215696756_1",
  "type": "cylinder",
  "name": "Small Cylinder",
  "params": {
    "radius": 5,
    "height": 40,
    "segments": 32
  }
}
6
read
ok
4ms
args
{
  "document_id": "doc_1781215696756_1"
}
7
delete
ok
5ms
args
{
  "document_id": "doc_1781215696756_1",
  "part_id": "1"
}
8
delete
ok
2ms
args
{
  "document_id": "doc_1781215696756_1",
  "part_id": "2"
}
9
create
ok
2ms
args
{
  "document_id": "doc_1781215696756_1",
  "type": "cylinder",
  "name": "Big",
  "params": {
    "radius": 25,
    "height": 40,
    "segments": 64
  }
}
10
create
ok
2ms
args
{
  "document_id": "doc_1781215696756_1",
  "type": "cylinder",
  "name": "Small",
  "params": {
    "radius": 5,
    "height": 40,
    "segments": 32
  },
  "parent_part_id": "1"
}
11
read
ok
2ms
args
{
  "document_id": "doc_1781215696756_1"
}
12
read
ok
4ms
args
{
  "document_id": "doc_1781215696756_1",
  "part_id": "1"
}
13
read
ok
2ms
args
{
  "document_id": "doc_1781215696756_1",
  "part_id": "2"
}
14
create
err
2ms
args
{
  "document_id": "doc_1781215696756_1",
  "type": "translate",
  "params": {
    "x": 30,
    "y": 0,
    "z": 0
  },
  "parent_part_id": "2"
}
15
create
ok
3ms
args
{
  "document_id": "doc_1781215696756_1",
  "type": "translate",
  "params": {
    "offset": {
      "x": 30,
      "y": 0,
      "z": 0
    },
    "child": 2
  },
  "parent_part_id": "2"
}
16
read
ok
3ms
args
{
  "document_id": "doc_1781215696756_1"
}
17
get_document
ok
2ms
args
{
  "document_id": "doc_1781215696756_1"
}
18
delete
ok
2ms
args
{
  "document_id": "doc_1781215696756_1",
  "part_id": "2"
}
19
get_document
ok
1ms
args
{
  "document_id": "doc_1781215696756_1"
}
20
create
ok
3ms
args
{
  "document_id": "doc_1781215696756_1",
  "type": "union",
  "name": "Fused",
  "params": {
    "left": 1,
    "right": 3
  },
  "parent_part_id": "1"
}
21
get_document
ok
1ms
args
{
  "document_id": "doc_1781215696756_1"
}
22
delete
ok
2ms
args
{
  "document_id": "doc_1781215696756_1",
  "part_id": "1"
}
23
delete
ok
2ms
args
{
  "document_id": "doc_1781215696756_1",
  "part_id": "3"
}
24
get_document
ok
1ms
args
{
  "document_id": "doc_1781215696756_1"
}
25
render_view
ok
106ms
args
{
  "document_id": "doc_1781215696756_1"
}
26
get_document
ok
1ms
args
{
  "document_id": "doc_1781215696756_1"
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260611T220816Z-c1d2.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": {
      "id": 1,
      "name": "Big",
      "op": {
        "type": "Cylinder",
        "radius": 25,
        "height": 40,
        "segments": 64
      }
    },
    "2": {
      "id": 2,
      "name": "Small",
      "op": {
        "type": "Cylinder",
        "radius": 5,
        "height": 40,
        "segments": 32
      }
    },
    "3": {
      "id": 3,
      "name": null,
      "op": {
        "type": "Translate",
        "child": 2,
        "offset": {
          "x": 30,
          "y": 0,
          "z": 0
        }
      }
    },
    "4": {
      "id": 4,
      "name": "Fused",
      "op": {
        "type": "Union",
        "left": 1,
        "right": 3
      }
    }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    {
      "root": 4,
      "material": "default"
    }
  ]
}
mecheval · an evaluation suite by Municipal Robotics
sibling project: vcad. · github

generated 2026-06-19T01:47:55.975Z · static site, regenerate with npm run build -w @mecheval/leaderboard