How to use Codex to print a measured badge case

The CADEX team used a Hack the North badge case to demonstrate an agent-assisted path from a photograph to a fabricated part. The system first asked people for the dimensions it needed, showing callouts on their reference images rather than assuming that a picture supplied accurate measurements.

Confirmed caliper readings went to Codex CLI in an isolated workspace. The agent wrote parametric CadQuery code and ran tools to inspect the geometry. A checker tested dimensions, hole positions, and other constraints, returning specific failures for another attempt. Three-dimensional previews and drawings came from the generated model.

The human boundary remained visible during fabrication. Early geometry could be mirrored or place features incorrectly even with correct measurements. The team also generated printer files for the wrong machine before correcting the setup, and encountered filament-loading problems. Automated CAD checks did not remove those physical tasks.

The badge enclosure was printed and assembled in the demonstration; the team reported that the screws aligned. Other venue repairs were explored, but this account’s verified physical result is the badge case. The workflow combines measurement, tool-visible failures, and real assembly checks instead of equating a plausible render with a usable object.

Prompt
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Source: Devpost · Evan Johnstone, Justin Badua, Matthew Lones, and Aaryan Biradar