Save Big on Coursera Plus. 7,000+ courses at $160 off. Limited Time Only! Grab it Follow along with this detailed machining video demonstrating the precision line boring process on a massive A-frame component from a Caterpillar 789 dump truck. Learn how a Sir Meccanica WS2 portable line borer tackles the challenging task of boring out the eye to exact tolerances, despite complications from extremely hard materials causing insert failures. Observe real-world problem-solving in action as experienced machinists work through tooling issues to successfully restore this critical component that connects the rear wheels to the truck's chassis.