Sphere (Globe) Petal Development

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Sphere

Job ref Shape Diameter mm Diameter is Plate thickness mm Density kg/m³

Petals

Petal rows per hemisphere, equator to crown One row across the equator Petals in each row one number, or a list from the equator up: 24, 20, 16 Crown plate half-angle from the pole, deg (0 = petals meet at the pole) Stagger seams row to row by half a petal Marks every deg of latitude

Petals are laid out on the mean surface: length along the meridian, width = arc of the latitude circle ÷ petals. Press or roll each petal to the sphere radius; trim seams on assembly.

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