This Geometry Nodes setup creates a seamless animation of a straight line rolling up into a coil, controlled entirely by a single slider. It works by mathematically generating both a straight base curve and a coiled spiral, aligning them, and seamlessly welding them together into one continuous thread. To make the shape look organic, the thickness and vertical height of the curve are driven by customizable graphs, allowing you to easily taper the ends or add wavy height variations. Finally, this unified thread is wrapped with a 3D profile to give it physical thickness and mathematically prepped for texturing