
I’ve played around with variations on the theme. There are a great many web articles that can be found on the math for the shape of eggs. One approach has been what I refer to as a “standard egg”. This is illustrated in the above figure. The shape is based on 4 arcs: a semicircle, a quarter circle, and two eights circles.
Another approach that I’ve found and used is a parameterized equation:
Playing with these parameters using a spreadsheet plot the values A=.75, B=.5 and K=.6 seem to work well.
The egg below is about 5″ tall and is made from aromatic cedar.

This one is one of the first I made, it uses cherry, walnut and ash.
