Face-centered Cubic Voroni Tetrahedron

George Hart has a bunch of amazing rapid prototyping geometric structures at http://www.georgehart.com/rp/rp.html

These are the parts to make Face-centered Cubic Voroni Tetrahedron of various sizes.

The pieces here have been scaled 7x and oriented to print nicely on a makerbot/reprap. For the originals, and other pieces to allow making octahedrons, see George's original page at http://www.georgehart.com/rp/FCC.html