Truncated triangular duoprism

The truncated triangular duoprism or tatriddip is a convex isogonal polychoron that consists of 6 truncated triangular prisms and 9 tetragonal disphenoids. 1 tetragonal disphenoid and 3 truncated triangular prisms join at each vertex. It can be formed by truncating the triangular duoprism,

It can also be obtained as the convex hull of 2 semi-uniform triangular-hexagonal duoprisms chosen such that the hexagonal and triangular prisms have the same circumradius. if the hexagons of this duoprism have edge length 1, the triangles have edge length 3.

Using the ratio method, the lowest possible ratio between the longest and shortest edges is 1:$$\sqrt2$$ ≈ 1:1.41421.