Building Block: Truncated Octahedron

## A simple Construction brick.

**derived from this more general tool:**
http://www.thingiverse.com/thing:409443

Multiple of these bricks can be connected with short pieces of ~3mm diameter filament.
Tip: If the bricks doesn't go well together the first time they are assembled a mini screw clamp can be helpful.
This brick has 14 faces to it's nearest neighbors.
(six cube faces and eight octahedral faces)
### Background:
This brick is the Wiegner-Seiz cell
http://en.wikipedi