(top, left) On a polystyrene hemisphere, little cork hemispheres in 3 sizes were stacked top-down, thus applying the Dislodgement model. (Diameter is 16cm.)
(right) On a flat plane, some hemispheres were stacked from the center outwards.
(bottom, left) In Fimo modeling clay, a long string with slowly increasing diameter was cut in many slices. These were stacked from the center outward. By careful flattening, the honeycomb pattern arose spontaneously.
(right) Apex Stack-and-Dragoutput for 3D-print with thickness