Machine worked very well. But within the first 3 inches, one of the cutters loosened and bent the screw holding it. This led to a large number of irregularities in the cutting of the tool and to the destruction of the back stop of the insert. I don't know if this is a quality issue or if they shipped it with a tool. There were no instructions on how to put them on before use, no instructions at all for the tool, just a parts breakdown.