Learn how to create a gear rig using expressions in After Effects. Explore the mathematical principles behind gear animation and discover strategies for animating multiple interlocking gears accurately. Create a system where gears turn correctly, don't intersect, and can be controlled with precision. Dive into the process of setting up gears in Illustrator, importing them into After Effects, and building an expression-driven rig. Understand the importance of consistent tooth size across different gear sizes and how it affects the animation. Follow along as the instructor demonstrates the step-by-step process of creating a gear controller and applying expressions to achieve realistic gear movement. Gain insights into problem-solving techniques and the math behind gear mechanics in motion design.