partial face mask 3d model

Create a 3D printable partial face mask as a thin hollow shell, not a head or helmet. Fit an adult face from forehead to just above the upper lip with smooth inner curvature and uniform wall thickness. The mask is designed as an optical illusion object, where the appearance changes dramatically when viewed from different angles. Construct the surface entirely from overlapping frames, offset ribs, angled planes, curved struts, arcs, rings, and polygon loops arranged at varying depths. Negative space dominates: the shapes form continuous holes and openings everywhere, with no flat or solid panels. Geometry must be layered and misaligned to create parallax, moiré-like depth, and shifting silhouettes as the viewpoint moves. Eye openings are absorbed naturally into the void structure, not cut separately. No grids, no symmetry, no textures, no artwork, no ears. All geometry connected and structural. Optimize for FDM printing, overhangs ≤45°. Output ONE continuous, manifold, wearable shell