I went to the London 2012 3D Print show this weekend, mind blowing stuff, with very nice atmosphere and a lot of open minded people. Although there is a lot of unjustified hype about the technology it will certainly change the world…
I even met Bre Pettis and was allowed to talk to him! (CEO of Makerbot).
The guys from Econolyst did a good job articulating the size of the market, the opportunities and key players. http://www.econolyst.co.uk/