dice tower 3d model

Create a fully functional 3D printable dice tower inspired by One Piece anime, designed as a cylindrical pirate fortress tower. Overall dimensions: Height 28 cm, diameter 11 cm. Wall thickness 3 mm. Designed for FDM 3D printing, no supports required. CRITICAL REQUIREMENT: Inside the tower there must be a continuous internal spiral staircase (helical ramp) that runs from the very top opening all the way down to the bottom exit without interruption. The ramp must complete 5 full clockwise rotations around a central vertical support pole. The spiral must be structurally connected and continuous, not segmented pieces. Spiral ramp specifications: Ramp width: 20 mm Ramp thickness: 4 mm Side guard rails: 2 mm height Central pole diameter: 24 mm Ramp slope: approx. 15–20 degrees Smooth rolling surface for polyhedral dice (d6, d20, etc.) No internal supports needed Top: Include a funnel-shaped entry hole, 3 cm diameter, slightly flared outward. Bottom: Include a gothic pirate-style arched exit opening (3.5 cm wide, 2.