Gemini 2.5 Pro → OpenSCAD
B · Engineering-Aidedcomposite 50.9 [45.5, 56.0]p5 0.0IRT θ 25.5
Google + OpenSCAD 2024.06· v2.5-pro + openscad 2024.06· released 2026-02-01· LLM+OpenSCAD· emits OpenSCAD· proprietary· 2000k ctx· $0.0035/$0.0105 per 1k tok
Mesh-only output (OpenSCAD does not produce BREP); STEP round-trip therefore disabled. CSG kernel: CGAL.
solid: agent · dashed: human baseline
PER-CATEGORY SCORE (95 % CI)
Geometric Primitives
85.7
Boolean Robustness
59.2
BREP Fidelity
34.5
Free-form Surfaces
78.3
Parametric Mechanical Parts
47.2
Assembly & Mating
31.3
Standards Compliance
47.6
Sheet-Metal Bodies
58.2
Sealing-Groove Design
60.1
Kinematic Mechanisms
51.1
DFM · 3-Axis CNC
57.8
DFM · Injection Mould
49.1
DFM · FDM 3D Print
69.2
CAM Toolpath Validity
51.4
Constraint Solving & Editability
56.1
Reverse Engineering
58.2
2-D Sketch Constraints
73.4
Functional Intent · FEA-Gated
31.0
Paraphrase Robustness
36.6
Confidence Calibration
36.4
MEAN METRICS BY LAYER
L1 · Geometry
| Category | Vol IoU | Chamfer | Hausdorff | NormCons | Watert. | Manif. | Euler | STEP RT | P@1 |
|---|---|---|---|---|---|---|---|---|---|
| Geometric Primitives | 0.574 | 0.164 | — | — | — | 0.935 | — | — | — |
| Boolean Robustness | 0.424 | — | — | — | — | 0.745 | — | — | — |
| BREP Fidelity | — | — | — | — | — | 0.858 | — | — | — |
| Free-form Surfaces | — | 0.331 | 1.627 | 0.710 | — | — | — | — | — |
L2 · Engineering
| Category | Dim RMSE | GD&T | FeatRec | Mating | Fit-Cls | Std |
|---|---|---|---|---|---|---|
| Parametric Mechanical Parts | 0.284 | 0.425 | 0.512 | — | — | — |
| Assembly & Mating | — | — | 0.518 | 0.446 | 0.212 | — |
| Standards Compliance | — | 0.438 | — | — | — | 0.513 |
| Sheet-Metal Bodies | 0.268 | — | 0.518 | — | — | — |
| Sealing-Groove Design | 0.304 | — | — | — | — | 0.506 |
| Kinematic Mechanisms | — | — | 0.519 | 0.450 | — | — |
L3 · Manufacturing
| Category | DFM | Draft | Min-Wall | CAM-Reach | Supp | Wall-Unif |
|---|---|---|---|---|---|---|
| DFM · 3-Axis CNC | 73.275 | — | 0.516 | 0.484 | — | — |
| DFM · Injection Mould | — | 0.445 | 0.508 | — | — | 0.520 |
| DFM · FDM 3D Print | 75.800 | — | 0.521 | — | 0.404 | — |
| CAM Toolpath Validity | — | — | — | 0.493 | — | — |
L4 · Cognition
| Category | ParamEdit | ConSolve | P-Range | FEA-σ | Para σ | Seed σ | Brier | EditLat |
|---|---|---|---|---|---|---|---|---|
| Constraint Solving & Editability | 0.582 | 0.578 | 0.524 | — | — | — | — | — |
| Reverse Engineering | — | — | — | — | — | — | — | — |
| 2-D Sketch Constraints | — | 0.535 | — | — | — | — | — | — |
| Functional Intent · FEA-Gated | — | — | — | 0.388 | — | — | — | — |
| Paraphrase Robustness | — | — | — | — | 0.051 | 0.056 | — | — |
| Confidence Calibration | — | — | — | — | — | — | 0.136 | — |
TASK-BY-TASK ARTIFACTS
PRIM-001Hollow cylinder (60 × 40 × 100)0.5930.00PRIM-007Right hexagonal prism with pitch fillet0.5210.00BOOL-003Coplanar-face union (knife-edge stress)0.6370.00BOOL-009High-genus subtraction (lattice block)0.4410.00BREP-004NURBS-handle goblet (G2 swept loft)0.0710.00SURF-002Compressor blade (NACA 65-(12)10)0.2190.00MECH-014L-bracket with M6 + slotted hole0.4550.00MECH-022Stepped shaft with retaining-ring groove0.0000.00MECH-027Planetary-gear carrier plate0.3670.00ASM-005Pin-in-hole, H7/g6 sliding fit0.4510.00ASM-011Dovetail slide (60° flanks)0.3760.00STD-002ISO 4762 M8×30 socket-head cap screw0.4650.00SHEET-003U-channel bracket, 1.5 mm Al, k=0.400.3790.00SEAL-001AS568-214 face-seal groove0.3590.00KIN-002Four-bar linkage, Grashof crank-rocker0.2980.00DFMCNC-0023-ax-machinable manifold block0.4090.00DFMMOLD-002Injection-mouldable enclosure half0.4370.00DFMFDM-008FDM-printable hinge (no support)0.5520.00CAM-0015-pocket plate, Ø3 endmill finish0.4200.00PARAM-006Editable flange (bolt circle param sweep)0.5200.00PARAM-013Editable bracket (length+30 %, hole→M8)0.4590.00REVENG-002Three-view ortho → bracket0.4690.00REVENG-009Three-view ortho → housing with cores0.4210.00SKETCH-003Tangent-arc transition profile0.6350.00FUNC-001Cantilever bracket — 250 N tip load, 6061-T6, SF≥40.0000.00FUNC-007Heat-sink fin array for 25 W TO-2200.1960.00PARA-0015× paraphrased L-bracket0.6260.00CAL-003Confidence-calibrated planetary carrier0.2790.00PRIM-002Sphere with planar cap0.5930.00PRIM-003Right truncated cone (frustum)0.7070.00PRIM-004Square-base pyramid frustum0.6230.00PRIM-005Tilted-axis box (30°)0.5310.00PRIM-009Hollow torus (Ø100 mean × Ø8 tube, 1 mm wall)0.4490.00BOOL-001Tangent cylinder onto cube (line-of-contact)0.5690.00BOOL-002Two interpenetrating spheres (lens intersection)0.0000.00BOOL-005ε-offset extrusion (sliver-face stress)0.4730.00BREP-001Periodic-spline cylinder (closed in U)0.0000.00BREP-002G1-only loft (tangent discontinuity)0.0760.00BREP-007Trimmed sphere with hole through pole0.0640.00SURF-001Ergonomic mug handle (revolved spline)0.2020.00SURF-007Mouse top-shell (Class-A)0.2890.00MECH-002Bearing block — two 6204 deep-groove bearings0.3620.00MECH-005Cam-follower lever (eccentric pivot)0.4510.00MECH-018Heat-set insert boss array (4× M3)0.4450.00MECH-031Threaded cap with diamond knurl0.3940.00ASM-001Threaded coupling M16×1.5 (male+female pair)0.3860.00ASM-008Spline shaft + hub (DIN 5480 W25×1.25×18)0.0000.00ASM-013Bayonet quarter-turn mount0.3710.00STD-001ISO 7050 self-tapping screw ST4.2 × 160.3490.00STD-005ISO 8734 dowel pin Ø6 m6 × 300.3240.00STD-008ASME B18.6.3 button-head 1/4-20 × 5/80.5280.00SHEET-001Box-pan with corner relief cuts0.3790.00SHEET-0073-bend electronics chassis0.3280.00SEAL-004AS568-218 piston-type radial groove0.3330.00SEAL-007ISO 3601-2 quad-ring face groove0.3910.00KIN-005Geneva drive — 4 station0.2520.00KIN-008Planetary gearset full mesh (sun + 3 planets + ring)0.3150.00DFMCNC-0054-pocket plate, R 0.5 internal corners0.5760.00DFMCNC-009Long-aspect bracket (vise-fixturable)0.5380.00DFMCNC-0135-axis-only fish-mouth saddle0.4660.00DFMMOLD-005Telephone handset shell0.3570.00DFMFDM-002Bridge-test calibration cube0.5580.00DFMFDM-011Print-in-place hinge0.4720.00CAM-005T-slot pocket array (Ø 8 + Ø 4 endmills)0.3530.00PARAM-009Configurable bottle (height + cap params)0.4580.00REVENG-005ABC dataset stepped pulley (multi-view)0.4620.00SKETCH-014Symmetric four-bar profile0.6100.00FUNC-003Heat-sink for 60 W CoB LED0.2120.00PARA-0055× paraphrased planetary carrier0.0000.00CAL-007Confidence-bracketed mounting flange0.3170.00