Source: Big Hex Machine – University of Bristol
Stuff from every other site
http://arduino-praxis.ch/projekte-2/tiny-attiny-node/
Via DangerousPrototypes
3D Printed Manufacturing Applications Expanding with Metal Threads and Screws – Stratasys Blog
http://blog.stratasys.com/2014/08/26/3d-printing-insert-metal-threads-screws/
Via adafruit
Via Adafruit