If you take good care of your kitchen knives, they will repay the favour. However, there comes a certain point, when sharpening just won't do. While a high quality and professional kitchen knife can have the potential to last a lifetime, the reality is that, in a working chefs environment, your knife will be put to the test and time will make a difference.

Yes, a dull edge can be sharpened, and small imperfections can be removed, but there are certain instances where your knife should simply be retired. So, when exactly is it time to replace your knives?