I had one also. I used it to help keep blades longer. In between cutting it did help some, but to my way of thinking it wasn't enough to warrant the price tag on it and it wore out faster than the blades. Needless to say I have never bought another. If they had a longer lasting sharpener I would probably invest in it as I don't get to many uses out of blades. I am awfully hard on blades. I can have spaces that skip before I even finish one project. So it was nice to at least help make it thru one. I guess we all try the gadgets and keep or reject. Hope this helps.
Rita