I have created a ring by subtracting an inner cylinder from an outer cylinder. To create a 'wavy' edge I have subtracted a low pyramid from the bottom of my ring and rounded the sharp corners with _DMFILLET. I am happy with the sinuous curve that has resulted, but would like to change the angle of the wavy edge. All around the edge I want to add the sections marked in red on the image. So I want to keep the sinuous curve on the outside of the ring, but the edge should always have a 90 degree angle with the center axis of the ring. Can this be done in BricsCAD?