Show HN: Seed3D – Generate Physics-Ready 3D Models with Millimeter Precision (www.seed3d.xyz)

Seed3D 1.0 is a new DiT-based image→3D generator that produces “physics-ready” assets with millimeter-level geometry, true PBR materials, and up to 6K texture maps. Rather than faking detail with normal maps, Seed3D outputs solid polygonal surfaces with crisp hard edges, watertight topology, stable thin structures for rigid/soft-body sims, and full PBR packs (albedo, roughness, metalness, normal, AO). It exports USD/USDZ, FBX and glTF and is tested with Omniverse, Isaac Lab, Unity and Unreal, targeting simulators, games, XR, VFX and robotics pipelines. The significance is practical: Seed3D compresses days of manual modeling, retopology and look-dev into an automated pipeline while preserving simulation constraints and production-grade shading. By validating physics constraints and producing LOD-friendly, engine-ready meshes, it directly supports embodied-AI and sim-to-real workflows, autonomous-agent training, and close-up visual fidelity for digital twins and product shots. Creators feed a single RGB image or small image set, then review mesh density, UVs and watertightness before exporting — enabling rapid iteration, reliable simulation behavior, and easier integration into Blender/Maya/Houdini for further authoring.