... ;2.Suitable for different shapes,such as cylindrical,internal,screw rod,curved and spherical,ect;3.Suitable for all kinds of ... lathe,grinding machine,boring machine,milling machine,planning machine,spherical lathe and CNC machine tools,ect, just only change the ... process,without abrasive,felt,lapping compounds and hardwork,save time and cost greatly,and very environmental,it's very different ...