I had a strange experience recently. I bought (yet another) new rotary cutter and although I loved the feel of it in my hand, it just was not cutting right. Hubster is my technical advisor so I asked him to look at it. Turns out there were 2 blades in it! We know because the blades are oiled they sometimes stick together. This must have happened in the factory because no where on the packaging did it suggest that there were 2 blades.