Myth #2) "Cutting a spring makes the spring softer."
I hear this one a lot. Actually, the opposite is true. Three things determine a spring's rate: wire diameter ( to the 4th power, the biggest factor), coil diameter (to the 3rd power), and number of coils (to the first power). As wire diameter increases, spring rates go up. As coil diameter and number of coils increase, spring rates go down. Cutting a spring does not change the wire diameter or the coil diameter. It does, however, reduce the number of coils, which slightly increases the spring rate.