In technology terms, a unicorn is a private company worth more than $1 billion. It's an aspiration for many start-ups attending the Web Summit. Carbon co-founder Dr. Joseph DeSimone discusses how his company created 3D printers that transform vats of polymer goo into fully-finished products at speeds many times faster than other additive manufacturing processes and the companies stages of development.

Guests:

Dr. Joseph DeSimone, Carbon; Carlos Eduardo Espinal, Seedcamp