Well, it took me 5 years but I have worn out my Cutco knife. I usually send it back to be sharpened twice a year depending on how much luck I had. Once after spring bear and then again after the fall season. I sent it in to be sharpened after the fall season and I just got a brand new one back yesterday. Great knife and a great company. I most often get 3 animals out of one sharpening. Mine is the DD serrated with orange handle.