← mecheval. / task / a2-l-bracket-01
L-bracket with mounting holes A · A2 · a2-l-bracket-01
bracket · boolean · holes · asymmetric
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
0
valid_solid{
"type": "valid_solid"
}1
bbox{
"type": "bbox",
"min": [
0,
0,
0
],
"max": [
50,
30,
30
],
"tolerance_mm": 0.1
}2
mass_props{
"type": "mass_props",
"volume_mm3": 8962.92,
"tolerance_pct": 0.5
}3
hole_count{
"type": "hole_count",
"diameter_mm": 5,
"expected": 2,
"diameter_tolerance_mm": 0.05
}4
hole_positions{
"type": "hole_positions",
"diameter_mm": 5,
"positions": [
[
10,
15,
0
],
[
35,
15,
0
]
],
"tolerance_mm": 0.1
}5
step_roundtrip{
"type": "step_roundtrip",
"tolerance_pct": 0.1
}Anti-cheese
{
"max_solid_count": 1
}
Limits
{
"max_tokens": 60000,
"max_wallclock_sec": 300,
"max_tool_calls": 50
}
Recent attempts
Runs (6)
| model | run | status | score | tokens | wall |
|---|---|---|---|---|---|
| claude-direct-claude-opus-4-7 | 20260428T153537Z-3a65 | PASS | 1.00 | 1.5k | 5.9s |
| claude-direct-claude-opus-4-7 | 20260428T153525Z-a46b | PASS | 1.00 | 1.6k | 6.8s |
| claude-direct-claude-opus-4-7 | 20260428T153513Z-ac6b | PASS | 1.00 | 1.6k | 6.7s |
| claude-mcp-claude-opus-4-7 | 20260428T145833Z-d1a8 | fail | 0.17 | 973.8k | 138.2s |
| claude-direct-claude-opus-4-7 | 20260428T142504Z-02a4 | PASS | 1.00 | 1.6k | 7.2s |
| claude-direct-claude-opus-4-7 | 20260428T141643Z-2876 | PASS | 1.00 | 1.6k | 6.8s |
| drawing mecheval. |
sheet TASK · a2-l-bracket-01 |
scale 6 runs |
| date 2026-04-28 |
drawn by muni |
project mecheval |