I purchased the Electric TruCut Rotary Blade Sharpener from the Grace Frame Company and have had great success. I think the secret is sharpening the blade before it gets too dull. Instead of just pushing harder after the first time my blade skips a few threads into the sharpener it goes. Thirty seconds on one side and thirty seconds on the other and it's like new again. I get a lot of mileage out of my blades this way. ����