TITLE: 3D picture of the 38-sided Engel space-filling polyhedron
QUESTION [12 upvotes]: On page 220 of Peter Engel's Geometric Crystallography, he describes a 38-sided convex polyhedron that can fill space.
I've seen this this accepted as the record in various places, but I've never seen a 3D picture.  Has anyone ever managed to make one?

REPLY [7 votes]: Here is the figure (I assume it is this one) in Grünbaum's paper to which Joe Malkevitch refers: