Order 2 of these blades. One had a crease where the blades were welded together which I tried to straighten with copper plates and a vise but it wouldn't go away. Moved the blade while cutting, which is no exception in my work. I give 3 stars because the 2nd blade works well. I have video but I did it before I took the blade off. If an Imachinist contacts me, I'm happy to level up with another blade that performs the same as the second blade I bought.