Mesh rebuild freecad knob

Opus 5.5, effort high$0.301m 14s1m 9s waiting on the model3 builds

Reference
iso
front
back
top
bottom
left
right

96of 100

built: 100
geometry: 93
AI judge: 7 of 7

What the AI judge checked

Pass:The overall form matches the reference: the same kind of object, the same silhouette from the matching angle
- Opus 5.5: pass: The result is a round cylindrical knob with a chamfered top, matching the reference silhouette in iso, side, and top views.
- GPT-6 Sol: pass: The result has the same round knob silhouette with a flat top, chamfered upper edge, and rounded lower edge.
Pass:Proportions match: the relative sizes of the major dimensions agree with the reference within what the eye can judge
- Opus 5.5: pass: The diameter-to-height ratio and chamfer size appear essentially identical to the reference in the side views.
- GPT-6 Sol: pass: The body height, diameter, and chamfer width appear consistent with the reference.
Pass:Every major feature visible in the reference (holes, slots, bosses, tabs, lips) is present in the result
- Opus 5.5: pass: The top chamfer and the bottom hex socket are both present, as in the reference.
- GPT-6 Sol: pass: The top chamfer and underside hexagonal socket are both present.
Pass:Those features sit where the reference has them
- Opus 5.5: pass: The hex socket is centered on the underside with the same orientation, and the chamfer is on the top edge, matching the reference.
- GPT-6 Sol: pass: The chamfer runs around the top perimeter, and the hex socket is centered on the underside as in the reference.
Pass:Nothing is present that the reference does not show — no decorative or unexplained geometry
- Opus 5.5: pass: No extra geometry beyond the body, chamfer, and hex socket is visible.
- GPT-6 Sol: pass: The result shows no additional holes, bosses, or decorative geometry.
Pass:The top edge is chamfered, not sharp
- Opus 5.5: pass: The side views show a clear angled chamfer band at the top edge.
- GPT-6 Sol: pass: A sloped band is clearly visible between the cylindrical side and flat top.
Pass:A hexagonal socket is visible in the bottom view
- Opus 5.5: pass: The bottom view shows a centered hexagonal socket.
- GPT-6 Sol: pass: The bottom view clearly shows a hexagonal socket.

Measured

✓ watertight: true == true
✓ one sub-part named knob: ok
✓ volume within 3 % of the mesh: ok
✓ bounding box within 0.5 mm of the mesh: ok
✓ symmetric difference under the measured floor: ok
✓ the socket clears a 8 mm key across the flats: ok
✗ the socket is hexagonal, not round: predicate returned false
✓ the socket is 6 mm deep: ok
✓ the imported knob is still declared as an import: ok
✓ asked the oracle at most once: ok
✓ sweep diameter=20: diameter tracks the control: ok
✓ sweep diameter=40: diameter tracks the control: ok
✓ sweep height=13: height tracks the control: ok
✓ sweep height=23: height tracks the control: ok

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Run hard-compact-2026-10-162026-10-16commit 6fa9f854spend $116.04 + $54.69 AI judging, 1 unpricedOther runs: 2026-11-05T06-56-21-kimi31-sonnet-hard, 2026-11-05T05-50-12-kimi31-vs-sonnet, 2026-09-23T06-56-16-hard-baseline-2026-09-23, 2026-09-10T19-44-23-baseline-2026-09, 2026-09-04T20-02-10-stage2-hard-cases, 2026-09-04T19-48-31-screen-14-fixed