Show HN: AI CAD Harness | Hacker News

Adam launched a beta AI CAD harness for Onshape and Autodesk Fusion that works inside the CAD app.

The system can read and edit existing parts and feature trees, automate cleanup, parametrization, filleting, and even generate CAD end to end.

Unlike opaque text-to-CAD tools, it focuses on workflow-native editing that better fits professional mechanical design.

The launch highlights rapid progress in spatial reasoning models and practical AI assistance for engineers.