helmet 3d model

Create an ultra-accurate 3D printable miniature Formula 1 Bell XFM-1 helmet shell based EXACTLY on Ayrton Senna’s 1991 helmet. Prioritize authentic Bell 1991 proportions, silhouette, dome curvature, compact chin, elongated rear taper, narrow jaw profile, and realistic visor opening geometry. Generate ONLY the smooth outer shell with hollow interior and open bottom. Visor opening must remain completely empty. DO NOT include visor, pivots, screws, mounting holes, vents, grooves, seams, decals, paint, logos, textures, padding, foam, or modern aero features. Style must match an authentic early-1990s Bell F1 helmet with soft continuous organic curvature and no sharp edges. Exact 1:10 scale. Final dimensions: 32mm height, 26mm width, 30mm length. Uniform 1.0mm wall thickness optimized for SLA/MSLA resin printing. High-poly smooth subdivision-quality surface, watertight manifold mesh, clean topology, no non-manifold edges, printable production-ready STL and OBJ.