modular tower 3d model

Design a VEX IQ style robotics competition game element called a Tri-Lock Nexus. The object is a modular scoring tower built for plastic manufacturing and robotics interaction. The base is a wide circular platform for stability. Above the base is a hollow cylindrical tower with smooth vertical walls and evenly spaced gripping cutouts so robots can grab or push it. At the mid section, include a rotating ring mechanism that has alignment slots around the perimeter. The ring should look mechanical but simplified, with clear slot openings where robots could insert game objects. At the top, include a triangular locking cap area with three evenly spaced placement zones designed for stacking small scoring pieces. These zones should look like shallow sockets or flat landing pads. The structure must look competition-ready, symmetrical, durable, and engineered for robotics gameplay. Avoid organic shapes. Use clean geometric surfaces, chamfered edges, and smooth transitions. Ensure: - flat robot contact surfaces -