tree dice tower 3d model

Design a fully functional 3D-printable dice tower shaped like an ancient druid tree. The dice shaft must run completely inside the trunk, hidden within the tree. A die is inserted at the top into a defined entry tunnel, travels through an internal 40–42 mm wide channel with three ramps angled 35–40° for proper randomization, and exits at the roots through a natural tree hollow with a slightly sloped tray. Exterior should resemble a twisted hollow tree with stable spreading roots. Support-free, ~3 mm walls, 180–200 mm tall, optimized for polyhedral dice, especially d20.