Text-to-CADIn discussion
Text-to-CAD
Text-to-CAD, an open-source tool a developer built while designing a seven-degree-of-freedom robot arm, drew 186 points and 48 comments on Hacker News. The author describes it as a harness and skills that let models generate and inspect STEP files directly, adding a topology sidecar to each file, and says it worked better than expected with GPT 5.5 and Opus 4.7. Commenters shared experience using Opus 4.7 with OpenSCAD for nebulizer adapters, calling it powerful but still in need of heavy manual checking, and some found that having the model render PNGs from several angles helped. Others argued that describing mechanical parts in prose is far less precise than a drawing, making the language barrier the main obstacle.
The purpose of this repo (harness and skills) is really to just give the models more direct tools to generate and inspect STEP files.
Saved . A shortened excerpt from Hacker News; the original publisher retains authorship.