I have a raw 3-D scan of a human hand saved as an STL. Before I send it to the printer, the mesh needs some focused attention: • The palm area is still open from the scanning process; it must be closed and made completely watertight. • Excess triangles, stray vertices, and internal shells can be removed—basic detail is all that’s needed, so feel free to decimate where it won’t affect the overall silhouette. • The finished model should be oriented, manifold, and error-checked so any slicer (PrusaSlicer, Cura, etc.) reports zero issues. Please return a single, optimized STL that passes a standard mesh analysis (Layer-by-layer preview, no non-manifold edges, no flipped normals). Tools such as Blender, Meshmixer, ZBrush, or Netfabb are all fine as long as the final file meets those checks. Once delivered, I’ll print it in resin and use it for practicing nail art, so the fingertips can stay as captured; only the palm needs structural closure.