Comment by abe_m

That really seems like it is written by someone without any experience using 3D CAD, particularly of the "make physical stuff" variety, rather than the artistic movie and video game asset variety.

English (or other human) language is pretty bad at describing 3D geometry. People have been using drawings and physical 3D models to describe designs going way back into antiquity. The idea you can just use text suitable for a current-design LLM to manipulate 3D technical data really seems like an idea from someone who has never tried.

But also, Solidworks and Inventor (and I think NX) have extensive API coverage that would allow an LLM to manipulate the geometry data, if the LLM could figure out what the data meant, and what it wants to do. If you can do it on screen with a mouse and keyboard, you can likely do it over the API. An add-in could certainly be written to accept requests for information and instructions on api calls to make from an LLM.