Hello!! Recently I have done some works about modeling a standard milling cutter. After drawing the contour of the cutter on the end surface of the cylinder. I tried to use "Swept Cut" to create edges on the cylinder. I've tried two methods to draw the guide line. One is based on helical line and the other is based on straight line (after which I'm going to use "Flex-Twisting" to twist the straight line into helical line). But then I find it inevitable that the position of the start point of the guide line effects the modeling result greatly especially on the transitional section of the milling cutter, as shown in the following figures. I don't get any parameter about the position of the start point of the guiding line on the cutter drawing though it is quite professional. So how can I solve this problem to model a standard milling cutter? Or am I on a absolutely wrong way to model this cutter?

                                                                                  The profile of the cutter

                                                              The start point of the Helical guiding line with the angle of 0°

                                                           The start point of the Helical guiding line with the angle of 90°

                                                        The start point of the straight guiding line with the angle of 0°

                                                           The start point of the straight guiding line with the angle of 90°