I bought the True Cut Blade sharpener and was very happy with the improvement in the blade...cut with it before on a scrap and followed directions, then cut again on the same scrap.....wayyyyyy better.... it does not repair nicks, of course, but it certainly improved the cutting edge... you do 20 swipes in one direction, reverse, do 20 more, then cut in half, do 10 in each directions, the cut in half again, do 5.... then i did two, wiped blade (loved the fact that i could do it without taking the cutter apart) and was very happy with results...whole process, even the first time, was maybe 2 minutes.... well worth the effort... i got on sale for $20... at Joann's online