Angelegt Dienstag 26 Juni 2018
Truncated Honeycomb Spacefill
GFDL 1.2 / CC BY SA 3.0 AndrewKepert & SharkD
https://commons.wikimedia.org/wiki/File:Truncated_octahedra_b.png
Exponential assembly:
http://e-drexler.com/p/04/05/0609factoryImages.html
Pipe mail station:
https://commons.wikimedia.org/wiki/File:Rohrpoststation.jpg
Bank pipe mail:
https://commons.wikimedia.org/wiki/File:Bank_pneumatic_tubes.jpg
