# Partsmith

- **Event:** [RAISE Summit Hackathon](https://cerebralvalley.ai/e/raise-summit-hackathon)
- **When:** Jul 4 at 9:00 AM – Jul 5 at 7:00 PM (GMT+2)
- **Where:** Paris, France
- **Team:** [Evan Chan](https://cerebralvalley.ai/u/evnchn)
- **GitHub:** https://github.com/evnchn/partsmith
- **Demo video:** https://www.youtube.com/watch?v=PtJ7vY5iHos
- **Gallery:** https://cerebralvalley.ai/e/raise-summit-hackathon/hackathon/gallery
- **Page:** https://cerebralvalley.ai/e/raise-summit-hackathon/hackathon/gallery/23

Partsmith — the printability gate for generative CAD. AI can generate a 3D model in seconds, but can you print it? Partsmith's Caliper engine measures every generated part (overhang, wall thickness, real-world fit) in build123d and ships it only if it passes — or rejects it with the exact number. The check that has to sit between "generate" and "print."

Describe a part; Claude Code agents write the build123d; Caliper gates it on measured geometry, and a broken design is auto-repaired red→green until every check passes. Three agents raced the same spec into three support-free designs, and Caliper ranked the leanest that passes: 131 mm³, 80× leaner than a naive solid block, all seven checks green. The checks are the optimization target — generative CAD stops being a dice-roll and becomes an engineering loop.

Honest scope: these are geometric printability + fit checks (the proven first pillar), not physical-function proof; structural/flow verification (FEA/CFD) is the roadmap. The repo runs green, and the gate demonstrably rejects bad parts (a too-thin wall, a too-tight slot, an oversize body — each caught with the measured number). Built clean-room during the hackathon.

## More from RAISE Summit Hackathon

- [RDS](https://cerebralvalley.ai/e/raise-summit-hackathon/hackathon/gallery/20)
- [AURA Clinical Agent](https://cerebralvalley.ai/e/raise-summit-hackathon/hackathon/gallery/21)
- [Geanremona](https://cerebralvalley.ai/e/raise-summit-hackathon/hackathon/gallery/22)
- [WanderAI](https://cerebralvalley.ai/e/raise-summit-hackathon/hackathon/gallery/24)
- [BestForce](https://cerebralvalley.ai/e/raise-summit-hackathon/hackathon/gallery/25)
- [Dhruva Myakeri](https://cerebralvalley.ai/e/raise-summit-hackathon/hackathon/gallery/26)

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Markdown version of https://cerebralvalley.ai/e/raise-summit-hackathon/hackathon/gallery/23. Site index for agents: https://cerebralvalley.ai/llms.txt · full text: https://cerebralvalley.ai/llms-full.txt