I have had this Kershaw burl since last may. It has become my do all knife, I use it for everything. Well to day at work I was flicking it open and close, like I do all the time, and when I closed it I herd a noise. My first thought was I bet the spring broke. For once I was right. Im not surprised; Im constantly opening and closing it and felt it was only a mater of time. I will say this much. It is still easy to open, and very smooth. I guess I will call Kershaw tomorrow and get a new spring.