helical lattice 3d model

Helical ribbon: Single continuous Archimedean spiral with 7 full turns • Base diameter: 220 mm tapering linearly to 80 mm at the top • Ribbon dimensions: 38 mm radial width, 6 mm base thickness • Inward bevel: Slight 10–15° taper on the inner ribbon face to drive droplets toward the center TPMS Gyroid Lattice • Schoen gyroid triply periodic minimal surface integrated throughout the ribbon volume • Cell size: 8 mm (balanced optimal) • Strut thickness: 1.2 mm • Porosity: ~70–80% for maximum surface area while maintaining printability and airflow Central Drainage System • 8 mm diameter central hollow axis • Subtle helical micro-grooves (1.5 mm deep) acting as an Archimedean screw for gravity-only water transport to the base