I've had this paper cutter for eight years, and granted, I don't use it very often, but the blade just got dull. I came here to order a new one, as I didn't know if it was possible to sharpen the blade, and in looking through the questions and answers, I learned that the blade is self-sharpening. After moving the arm up and down several times, I tried cutting some paper, and sure enough, it's sharp again. Thanks to those who provided that tip, and thanks to Swingline for a product that is still going strong.
Rating: [5 of 5 Stars!]