Proponents of 3D printing say it has the potential to alter radically a number of industries. Peter Marsh, FT manufacturing editor, talks to one such supporter – Abe Reichental of US-based 3D Systems – to find out how it works and if it really is a ‘disruptive technology’. Go to: http://video.ft.com/1700835179001/3D-printing-bigger-than-internet/Companies