Suspended Mariner Astrolabe Seed Sphere

Construct three intersecting wooden rings using thin-kerf steam-bent white oak to form a nested gimbal structure. These rings provide the kinetic movement required to keep the interior seed cup perfectly balanced regardless of the wind.

Mount a precision-machined brass pivot assembly at each intersection point to ensure fluid, frictionless rotation. This mechanical design allows the central seed vessel to react to shifting air currents without spilling birdseed.

Incorporate a deep-carved walnut basin at the core of the sphere to hold the food reservoir. The interior of the basin is polished with food-safe wax to prevent seed rot and ensure consistent gravity-fed distribution.

Finish the outer rings with a deep mahogany stain and etch golden constellation lines into the grain to reflect the nautical theme. Once assembled, hang the sphere from a heavy-duty swivel mount to maximize its kinetic potential in your backyard.