A router bit set can offer a wide range of choices. Your set may include edge bits, groove bits, and even a special bit or two for particular woodworking needs. A good rule of thumb when using your router bit set is to select the widest bit possible for your work needs. Another thing to pay close attention to is heat. If you do a large amount of routing, your bits may overheat, which can alter and damage the metal. Don't overdo it with a router bit. Give it time to cool between cuttings and you will extend the life of that bit.