The flexible but unstretchable surfaces of right circular cones or elliptical cones can be mapped onto a plane. The resulting 2D developed pattern, when cut out, can be reformed into the 3D surface, e.g. using card stock. 3D-software programs may use unfolding or unwrapping as terminology for producing the developed pattern. For the circular and elliptical plates shown, the 2D developed patterns were calculated using geometry and drawn in Inkscape. A design was then added onto the outside perimeter of the 2D patterns for circular plates. The maximum diameter of these plates is 11 inches.
The last two photos show the results of the development of a truncated elliptical cone. The ratio of the semi-major to semi-minor axes was 2 and the maximum diameter is 9.25 inches.