The rise of 3D printing continues. The mighty logistics machine that is the US Army now uses 3D printers to manufacture spare parts. The scale model of the Aston Martin DB5 in Skyfall (spoiler alert?) is also a “printed” 3D model.
“3D printing” is a bit of a misnomer and I prefer its more technical term, additive manufacturing. That nicely illustrates how it works – you add material to build up whatever you want. It also highlights the difference between it and conventional machining, which is substractive – you remove material from a block until you’re left with the object you wanted. This is of course highly inefficient and wasteful compared to building up the object using only the materials you need. Continue reading