This project was a test of one-shot colloquial CAD using image analysis for verification.
The goal was to generate an OpenSCAD 3D model from a natural language description, render it to PNG, and use image analysis to verify correctness - all in a single pass.
The initial prompt requested a snowman with:
- Three z-aligned intersecting spheres (body, chest, head)
- A stovepipe hat (two cylinders)
- A cone nose
- Hemisphere eyes and buttons
This was successfully generated and verified in one shot.
However, when a corn-cob pipe was requested to be added "held jauntily," the specification was inadequate. The initial implementation had the pipe oriented backwards (stem pointing outward, bowl near the face). A follow-up correction was needed to properly orient the pipe with the stem extending from the mouth to the bowl.
One-shot became two-shot due to the ambiguous "held jauntily" specification for the pipe. The phrase didn't adequately convey the expected orientation of stem-to-bowl relative to the face.
snowman.scad- OpenSCAD source codesnowman.png- Rendered outputclaude_conversation.md- Full conversation log