DeepCAD
C · Conceptualcomposite 42.1 [34.0, 50.3]p5 0.0IRT θ 13.6
Wu et al. 2021 (research)· vofficial checkpoint, retrained 2024-11· released 2024-11-30· Diffusion-3D· emits BREP· research
Transformer over CAD command sequences (extrude, revolve, sketch). Limited prompt vocabulary; we wrap with a Claude-3.5-mini paraphraser to convert natural prompts into the in-distribution token grammar.
solid: agent · dashed: human baseline
PER-CATEGORY SCORE (95 % CI)
Geometric Primitives
91.8
Boolean Robustness
45.3
BREP Fidelity
82.5
Free-form Surfaces
58.3
Parametric Mechanical Parts
33.9
Assembly & Mating
34.8
Standards Compliance
31.2
Sheet-Metal Bodies
52.6
Sealing-Groove Design
47.5
Kinematic Mechanisms
39.7
DFM · 3-Axis CNC
44.2
DFM · Injection Mould
36.5
DFM · FDM 3D Print
50.6
CAM Toolpath Validity
0.0
Constraint Solving & Editability
27.1
Reverse Engineering
41.0
2-D Sketch Constraints
53.7
Functional Intent · FEA-Gated
35.1
Paraphrase Robustness
68.3
Confidence Calibration
27.6
MEAN METRICS BY LAYER
L1 · Geometry
| Category | Vol IoU | Chamfer | Hausdorff | NormCons | Watert. | Manif. | Euler | STEP RT | P@1 |
|---|---|---|---|---|---|---|---|---|---|
| Geometric Primitives | 0.770 | 0.127 | — | — | — | 0.965 | — | — | — |
| Boolean Robustness | 0.406 | — | — | — | — | 0.907 | — | — | — |
| BREP Fidelity | — | — | — | — | — | 0.931 | — | 0.109 | — |
| Free-form Surfaces | — | 0.811 | 4.065 | 0.643 | — | — | — | — | — |
L2 · Engineering
| Category | Dim RMSE | GD&T | FeatRec | Mating | Fit-Cls | Std |
|---|---|---|---|---|---|---|
| Parametric Mechanical Parts | 0.323 | 0.369 | 0.480 | — | — | — |
| Assembly & Mating | — | — | 0.458 | 0.413 | 0.173 | — |
| Standards Compliance | — | 0.362 | — | — | — | 0.262 |
| Sheet-Metal Bodies | 0.275 | — | 0.497 | — | — | — |
| Sealing-Groove Design | 0.342 | — | — | — | — | 0.292 |
| Kinematic Mechanisms | — | — | 0.444 | 0.449 | — | — |
L3 · Manufacturing
| Category | DFM | Draft | Min-Wall | CAM-Reach | Supp | Wall-Unif |
|---|---|---|---|---|---|---|
| DFM · 3-Axis CNC | 64.600 | — | 0.338 | 0.343 | — | — |
| DFM · Injection Mould | — | 0.354 | 0.340 | — | — | 0.400 |
| DFM · FDM 3D Print | 59.500 | — | 0.330 | — | 0.813 | — |
| CAM Toolpath Validity | — | — | — | — | — | — |
L4 · Cognition
| Category | ParamEdit | ConSolve | P-Range | FEA-σ | Para σ | Seed σ | Brier | EditLat |
|---|---|---|---|---|---|---|---|---|
| Constraint Solving & Editability | 0.281 | 0.309 | 0.224 | — | — | — | — | — |
| Reverse Engineering | — | — | — | — | — | — | — | — |
| 2-D Sketch Constraints | — | 0.312 | — | — | — | — | — | — |
| Functional Intent · FEA-Gated | — | — | — | 0.185 | — | — | — | — |
| Paraphrase Robustness | — | — | — | — | 0.082 | 0.045 | — | — |
| Confidence Calibration | — | — | — | — | — | — | 0.224 | — |
TASK-BY-TASK ARTIFACTS
PRIM-001Hollow cylinder (60 × 40 × 100)0.7990.00PRIM-007Right hexagonal prism with pitch fillet0.7420.00BOOL-003Coplanar-face union (knife-edge stress)0.3680.00BOOL-009High-genus subtraction (lattice block)0.4440.00BREP-004NURBS-handle goblet (G2 swept loft)0.5240.00SURF-002Compressor blade (NACA 65-(12)10)0.1010.00MECH-014L-bracket with M6 + slotted hole0.4090.00MECH-022Stepped shaft with retaining-ring groove0.0000.00MECH-027Planetary-gear carrier plate0.4230.00ASM-005Pin-in-hole, H7/g6 sliding fit0.3390.00ASM-011Dovetail slide (60° flanks)0.3720.00STD-002ISO 4762 M8×30 socket-head cap screw0.1960.00SHEET-003U-channel bracket, 1.5 mm Al, k=0.400.4340.00SEAL-001AS568-214 face-seal groove0.1070.00KIN-002Four-bar linkage, Grashof crank-rocker0.3300.00DFMCNC-0023-ax-machinable manifold block0.3560.00DFMMOLD-002Injection-mouldable enclosure half0.2380.00DFMFDM-008FDM-printable hinge (no support)0.1380.00CAM-0015-pocket plate, Ø3 endmill finish0.0000.00PARAM-006Editable flange (bolt circle param sweep)0.1540.00PARAM-013Editable bracket (length+30 %, hole→M8)0.1290.00REVENG-002Three-view ortho → bracket0.0920.00REVENG-009Three-view ortho → housing with cores0.0990.00SKETCH-003Tangent-arc transition profile0.1630.00FUNC-001Cantilever bracket — 250 N tip load, 6061-T6, SF≥40.1620.00FUNC-007Heat-sink fin array for 25 W TO-2200.1070.00PARA-0015× paraphrased L-bracket0.4160.00CAL-003Confidence-calibrated planetary carrier0.1000.00