I bought a jet band saw a few years ago and used the saw blades that came with it. I've had a really hard time sawing through anything more than a few inches thick from the start. I also thought I was just an idiot for not being able to cut darning curves. I finally decided to try the new saw blades and I have to say I'm now in love with my band saw and the Olson blades. The bandsaw works like a dream and now I can cut curves! Do yourself a favor and ditch the unwanted saw blades that come with your band saw and buy these. You will not regret it.