futuristic helmet 3d model

Create EXACTLY these separate parts: Part 1: Top skull shell Part 2: Rear skull shell Part 3: Faceplate Part 4: Jaw / mouth section Part 5: Mouth grill Part 6: Left eye frame Part 7: Right eye frame Part 8: Left ear module Part 9: Right ear module 3D PRINTING RULES (DO NOT IGNORE): Each part must be a closed watertight solid Minimum wall thickness 3 mm No thin edges No intersecting geometry No floating parts Clean, smooth surfaces ASSEMBLY: Add simple cylindrical alignment pegs and matching holes Peg tolerance: 0.3 mm Parts must fit together in correct helmet shape STYLE: Hard-surface sci-fi helmet Mechanical panel lines Hex pattern only on skull shell No organic sculpting