To create an ellipse, select the Ellipse Tool from the Sketch group of the CommandManager. Drag out a circle from the origin, as shown in Figure P4.4C, and then click and drag a point on the edge of the circle to “flatten” it into an ellipse, as shown in Figure P4.4D. Quadrant points are created at four locations on the ellipse; use these points to define the semimajor and semiminor axes of the ellipse. Add centerlines from the origin to the quadrant points, as shown in Figure P4.4E, and set them to horizontal and vertical to correctly align the ellipse. Add the dimensions, and the sketch should then be fully defined.
Complete the loft by selecting the guide points as shown in Figure P4.4F. Note that because the guide points are not vertices, you cannot snap to them. The guide points can be aligned to a reasonable degree by viewing the preview from the Top View and aligning the guide points to be along a straight line projection, as shown in Figure P4.4G.
