I have personally used the Red Rock Store (redrock.com) to have Eskimo blades sharpened. They are located in Ely, Minnesota. Turn around time was fast. You can find their prices and info on their website. Otherwise Dakota Angler in Sioux Falls, South Dakota can help you. They have a guy that picks up auger blades and sharpens them. Dakota Angler's # 605 336 9132.