The attached picture shows a swpet cut on teh surface of a tube. I have two questions. 1.) I had to make this cut in 3 steps. First The right side radial cut, then the straight cut and finally the left radial cut. I tried doing this in one cut using a 3D sketch as shown but it would not accept the sketch. Does anyone know if this is possible in on estep. 2.) The left radial cut looks to have "chatter" on the edge. Does anyone know why this might be happening.