Hunyuan 3D Part (Tencent, Dec 2025) is a specialized 3D-to-3D model designed for asset decomposition and cleanup. It takes an existing 3D mesh (GLB, PLY, or OBJ) as input and automatically identifies distinct structural components such as gears, connectors, or housings. It then outputs these as neatly separated, organized sub-meshes ready for kitbashing or targeted re-texturing. This is particularly effective for mechanical objects or hard-surface designs that require precise structural segmentation. Cost: 0 CU (error in log).