Ovals are what they use for race tracks. Ellipses have no straight sides. Their perimeters are constantly curved according to a mathematical formula. The earth travels an elliptical orbit around the sun, one of the interesting natural facts that we can enjoy. The cause of this is gravitational, of course.
Eggs have a shape of their own, even more wonderful than the ellipse.
These are created by the Creator through the humble bird. I hope this short article will be of help to you as you prepare patterns for your relief carving. Contact me by e-mail.