decorative egg 3d model

A decorative hollow Easter egg made from a continuous spiral ribbon structure. The egg shape is formed by a single flowing spiral that wraps from bottom to top, creating the entire shell. The spiral ribbon has a smooth organic curve and evenly spaced gaps between each loop so the egg appears airy and lattice-like rather than solid. The spiral thickness should be sturdy for 3D printing, with rounded edges and a consistent width. The pattern should create a visually pleasing twisted or hypnotic spiral surface across the egg. The egg must be split horizontally into two equal halves (top and bottom). The halves connect using integrated screw threads, with the bottom half containing internal threads and the top half containing matching external threads. Threads should be large and coarse so they are easy to 3D print and assemble. The design should be symmetrical, smooth, and printable without extremely thin features. The spiral structure should continue naturally across both halves so the seam is subtle when as