# Snaprint

- **Event:** [Meta Global AI Developer Hackathon](https://cerebralvalley.ai/e/meta-ai-developer-hackathon)
- **When:** Oct 26, 12:00 PM – Nov 4, 9:00 PM (EST)
- **Where:** Online
- **Team:** [Alexandre Molina](https://cerebralvalley.ai/u/AlexandreMolina)
- **GitHub:** https://github.com/MolinaAlexandre/SnapPrint
- **Demo video:** https://github.com/MolinaAlexandre/SnapPrint/blob/main/media/SnapPrint_demo.mp4
- **Gallery:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2444

SnapPrint (VoiceCAD) is an end-to-end multimodal AI pipeline that transforms a simple smartphone photograph and a spoken voice prompt into a 3D-printable CAD file (.stl).
Designing custom functional 3D accessories (such as desk docks, wall mounts, sim-racing wheel adapters, or replacement brackets) traditionally requires expensive calipers, complex CAD software, and parametric modeling expertise. SnapPrint eliminates these barriers:
Visual Calibration & Segmentation: The user snaps a photo of an object alongside a standard €1 reference coin. The system segments both the target object and the reference coin, converting pixel contours into sub-millimeter real-world dimensions via OpenCV calibration.
Voice-to-CAD Generation: The user speaks their design intent (e.g., "Design an angled desk dock with a bottom cable cutout"). The system transcribes the command, extracts spatial constraints, and generates clean, modular OpenSCAD (.scad) code by leveraging a parametric CAD primitive library (lib_primitives.scad).
Autonomous Validation & 3D Preview: An automated OpenSCAD compilation loop inspects the output, iteratively self-correcting syntax or geometry errors. The resulting .stl mesh is immediately rendered interactively in a Next.js / Three.js browser viewer ready for 3D printing.

## More from Meta Global AI Developer Hackathon

- [Screen-Time](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2441)
- [S47](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2442)
- [Latent](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2443)
- [Twimler](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2445)
- [Merlin](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2446)
- [La Asistenta](https://cerebralvalley.ai/e/meta-ai-developer-hackathon/hackathon/gallery/2447)

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