My flatmate works for Carbon3D, which just left stealth mode yesterday. 3D printing has always been a fascination, but when I tried to dabble my feet and print a complicated blue french horn for a halloween costume, I saw firsthand how slow and finicky the current generation of consumer printers is. 3 days of trial and error later I had a cruddy tiny french horn. Carbon3D aims to reduce this to minutes instead of days, and they appear to have succeeded.