dice tower 3d model

Generate a 3D-printable dice tower shaped like a whimsical big-top tent about 10 inches tall. Include a top funnel opening sized for standard dice up to 25mm, an internal spiral chute allowing smooth descent and randomization, and a bottom exit into a large dice tray. Ensure all parts are manifold, watertight, and suitable for STL export. Prioritize clear geometry, correct spiral angle and alignment, and stable base contact. Minimal decorative detail, focus on functional printable design.