Square-octagrammic duoprism

The square-octagrammic duoprism, also known as sistodip or the 4-8/3 duoprism, is a uniform duoprism that consists of 8 cubes and 4 octagrammic prisms, with 2 of each meeting at each vertex.

Vertex coordinates
The coordinates of a square-octagrammic duoprism, centered at the origin and with unit edge length, are given by:
 * (±1/2, ±1/2, ±1/2, ±($\sqrt{2–√2}$–1)/2),
 * (±1/2, ±1/2, ±($\sqrt{2}$–1)/2, ±1/2).