I bought the dritz hand sharpener from Joann's and it didn't work very well. I just bought an electric one from connecting threads, $52. If it works it will be worth it with the expense of the blades. I bought $10 of harbor freights blades and most of them were just as good as the expensive ones. I had one of the expensive ones and compared them and the expensive one dulled faster than the harbor freight one.
I had tried a stone and lathe to sharpen but I am not steady enough to keep the right angle to sharpen. I will let you know what I think of the electric sharpener.
Lynda