Magnetic Core Memory. Each magnetic ring represents one bit of data. This type of memory was used through the mid 70s.
Early computer advert. Found at the Info Age Science Center in Wall, NJ
Etching circuit patterns with a laser. The board is covered with photo resist and the laser etches out the circuit pattern. The next step will be to put the boards in an etchant which will remove the photo resist, leaving the copper circuit behind.
Miki found a place to sit inside a Makerbot
Friction welding machine designed and built at Cooper Union. It welds two pieces of metal by spinning one piece super fast against a second, stationary piece. The friction generates enough heat to weld the joint.