i am a high school student and am trying to cut a letterd piece out of steel and i need to roughit down with a .25 inch endmill but i can not get it to leave extra stock around the letters to come by with a finish pass and a 1\8th inch endmill the teacher said that it will break if i try to do it all with a 8th inch endmill. is any one familiar with mastercam x and no how to do this none of my teachers no how to do it? all help would be appreciated.