hollow sphere

 From:  bemfarmer
Form 180 degree red semicircle with arc, and also a blue one, to make up a 2 piece circle, one longitude circle.
Run lineweb on the red and green arcs, with 17 points, to form17 latitude points.
Run circle/diam on the 17 points. Erase points.
Run array circular on the red&green circle, to form say 16 longitude circles.

EDITED: 18 Mar 2017 by BEMFARMER