The pocket knife is the "universal tool" in just about every car guy's life. Michael Janich discusses the three design innovations that established Spyderco as the industry leader, and delves into how they prioritize the mechanical properties of their blades. Find out why the predictable composition of a leaf spring is the bladesmith's favorite automotive-based raw material, and hear Mike's answer to the challenge, "If somebody gave you a leaf spring, how fast could you make a knife out of it?"