I have a colored 3D model that needs professional touch-up work to make it fully print-ready. This is for a custom figurine production, so precision and attention to detail are critical. Specific Requirements: Model Merging: Combine separate head and body models into a single, seamless mesh Texture Refinement: Fix minor texture issues and ensure clean, print-ready surfaces Watertightness: Ensure the model is completely manifold with no holes, gaps, or non-manifold edges Wall Thickness: Set minimum wall thickness to 1mm or higher throughout the entire model for structural integrity during printing Print-Ready Export: Final delivery should be optimized for 3D printing (STL/OBJ format) Required Tools/Software: Blender (primary) ZBrush (if needed for sculpting fixes) Materialise Magics (for final print validation - preferred but not mandatory) Deliverables: Print-ready 3D model file (OBJ, MTL, PNG) Original Blender project file (.blend) Brief report confirming watertightness and wall thickness validation