6 × 3 = 18. A hexagonal prism has 18 edges. Image caption, The vertices of a prism are at each end of the 3D shape. The number of vertices is twice the number of vertices of an end face.

STOCKHOLM — Hexagon has acquired the 3D Systems' Geomagic suite of interoperable software packages, which are used to create high-quality 3D models from multiple sources, including laser scanning.

The original 3D-printed ball sold out in seconds. The new run, with a new burgundy color, will probably last as long.