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CADmium: Fine-Tuning Code Language Models for Text-Driven Sequential CAD Design

Created by
  • Haebom

Author

Prashant Govindarajan, Davide Baldelli, Jay Pathak, Quentin Fournier, Sarath Chandar

CADmium: A Large-Scale Language Model for Text-Based CAD Design

Outline

This paper presents a novel approach that leverages large-scale language models (LLMs) for computer-aided design (CAD) automation. We build a large-scale dataset containing over 170,000 CAD models and high-quality natural language descriptions based on GPT-4.1. Based on this dataset, we fine-tune Code-LLM to generate CAD sequences in JSON format from the natural language descriptions. Furthermore, considering that simple metrics cannot adequately assess the quality of generated objects, we introduce geometric and topological metrics based on sphericity, mean curvature, and the Euler characteristic. Experimental results demonstrate that CADmium can automate CAD design and significantly accelerate the design of new objects.

Takeaways, Limitations

A novel approach to automating CAD design using large-scale language models is presented.
Building and publishing a dataset of over 170,000 CAD models.
Fine-tuning the code-LLM to generate CAD sequences in JSON format from natural language descriptions.
Introducing new geometric and topological metrics to evaluate the quality of generated objects.
It presents the possibility of CAD design automation and improves design speed.
Dependencies of the dataset generation pipeline based on GPT-4.1
Model performance is affected by dataset quality.
Specialized in generating CAD sequences in JSON format, making it difficult to generalize to other CAD formats.
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