This was kinda neat. I was able to get a tour of the Benchmade Factory in Portland Oregon and this was one of the many machines they had for making there knives. This particular machine used wet stones to take off the metal burrs and smooth the blades after they were laser cut out of sheet metal. Also very interesting all the knives that Benchmade manufactures are hand sharpened. Quite impressive considering the number of knives they sell each year.