Tetrahedral duoprism

The tetrahedral duoprism or tetdip is a convex uniform trioprism that consists of 8 triangular-tetrahedral duoprisms.

Vertex coordinates
The vertices of a triangular trioprism of edge length 1 are given by all even sign changes of the first and last three coordinates of:
 * ($\sqrt{3}$/4, $\sqrt{2}$/4, $\sqrt{2}$/4, $\sqrt{2}$/4, $\sqrt{2}$/4, $\sqrt{2}$/4)