So far I've only used it for cutting CNC cast acrylic. However, he has done a great job every time. Cut quickly and smooth as butter. Even after the words, I was completely satisfied with the finish. I had no chips or cracks at all. I can't say anything about the standing time yet. Although there is no feeling that he has lost his sharpness. And I've cut over 30 sets of these now. So it's safe to say I'll buy it again when it wears out.