spiral vase 3d model

Create a single-piece 3D printable speaker enclosure shell, 30 cm tall, inspired by a modern sculptural twisted vase. The outer surface must have smooth spiral ridges wrapping around the body in a continuous vortex pattern. The enclosure must be fully closed on the back with no holes or cavities, only a clean smooth surface with the same spiral texture. The front must include one centered circular opening for a 4-inch speaker driver (102 mm diameter), slightly recessed with a mounting lip. The top must have a single oval opening for internal access, with thick walls. The design must be a single watertight manifold mesh, printable in one piece, no separate parts. Wall thickness: 4 mm minimum. The base must be flat for stable standing. Style: minimal, premium, organic, decorative object, not looking like a typical speaker. Output must be clean STL-ready geometry with no buttons, no electronics, no extra details.