I’ve sharpened many serrated blades of my own and in my knife sharpening business ... as those used to sharpen a chainsaw—can be used to repair the damage, then refine the edge with a diamond rod.

Many people take their knives to a specialty shop to get them sharpened or buy a professional sharpening rod. However, outsourcing the task can be expensive (about $2-4 per knife), and doing it ...