I love these blades and use them often. I bought maybe ten or so. The latter didn't work from the start. I checked all the settings, tried again and again with the hardwoods I was using, and after it ruined the jewelry box I was making by moving about 1/2 inch, I gave up and replaced it with another new one of the same kind. , all the difference in the world. So while we often blame our tools for our mistakes, sometimes it really is a tool!