[yorwba]

When you want a very specific shape, text is probably not the right input modality. See also image generation, where to get very specific outputs, you're better off defining the large-scale structure spatially with a controlnet and only using text for the visual style and decorative details that do not need to be precisely controlled.

What shapes would you ask a text-to-3D model to create for you?

[alpaca128]

That makes me wonder whether an LLM for code generation could actually work for OpenSCAD-style designs as well, especially as it has a quite small set of functions. The only thing that makes me doubtful is that the coordinates have to correctly map to 3D space.