In comparison to the previous case, it has not been possible to increase the speed more than 3000 mm/min. Faster cuts present pittings and uncut areas. Fig. 6 shows how the kerf size varies for the different levels of power and speed values. As it can be observed, higher kerf values are measured when power is increased or speed is decreased. Higher kerf values are due to higher heat transfer to the sheet and more material is melted. The kerf values range, as the previous case is about 0.21 mm (spot size).