Chris Dixon, the entrepreneur-turned angel investor-turned general partner at VC firm Andreessen Horowitz, today said that he believes the 3D printing movement has the potential to revolutionize manufacturing and that it is an area where he would like to make multiple investments in the future. In contrast, he described startups in areas like social networking facing “general fatigue”. Earlier this month, Chris Dixon and Andreessen Horowitz led a $30 million Series C round in Shapeways, a 3D printing company, where he has now joined the board.