-The truncated tetrahedron is an Archimedean (semi-regular) solid.

-For the 8 faces, this model has 4 hexagons made from purple heart, and 4 triangles from lemon heart (pau amarello). It has 18 edges and 12 vertices.

-It is formed by cutting corners off a tetrahedron.

-Below, we have a tetrahedron on the left, and its truncated form on the right.  The tetrahedron is made from solid walnut, while the truncated model is mahogany.