The old fashioned blue, sandpaper does the trick for me. In fact my friend was over and her blade was all nicked and dull. I gave her a new one while I sharpened hers and she was so impressed when I gave her the original one back. It worked like new. I swear by mine. I looked at the ad for the orbital one and I couldn't even find out how much it was. Sounds like a lot more than the old standby.