... precision 2 speed 3 the heat affected zone is small,not easily deformed.4 cost-effective The machine applies to ... kitchen utensils,automobiles,machinery,metal crafts,saw blades,electrical components,optical industry,spring,PCB,electric kettle,medical microelectronics,hardware,knife, ... than 100 times.3.The heat affected zone is small,not easily deformed. Kerf smooth,beautiful ,no post-order processing ...