Sand3D

Sand3D is a 3D-as-code dataset library by Sandflow containing 100,000 3D objects written as code. These objects range from CAD parts to articulated mechanical structures, all written in a single language.

What It Is

Sand3D is both a dataset and a Python-based 3D modeling language designed for LLMs (Large Language Models). Each 3D object corresponds to a Python program file that defines the shapes, holes, positions, and materials of its components through code. The rendered mesh is generated entirely by the object's Sand3D program.

Problem Solved

Traditional 3D data formats are not AI-friendly. Sand3D converts 3D objects into structured code, enabling LLMs to understand, generate, and modify 3D content more directly. Its streamlined API requires 4.0× fewer tokens than bpy.

Key Capabilities

• Large-scale dataset: 100,000 3D assets available for download in a single collection.
• Code representation: Each object is a Python file that builds shapes part by part.
• Articulated object support: Includes 3D objects with movable parts.
• Multi-source reconstruction: Rebuilt as code from five open-source collections.
• LLM-friendly API: The entire API can be described in just 3,643 tokens.

Who It's For

Developers and researchers working on 3D generation, computer vision, or embodied intelligence. Sandflow also plans applications based on this technology, including product viewers, Packshot rendering, point cloud reconstruction, video scene setup, and game prop generation. The dataset is open-sourced on Hugging Face and GitHub, and the Python library is ready to use.