How does 3D printing work?

So we've had 3D TV, movies and games - how about a 3D printer?

That's right, there's a new bit of kit that lets you to turn drawings into real-life 3D objects!

The idea is that one day it can be used to create things like toys and jewellery.

Leah's been to see how it all works - and even gets a copy of her face printed in 3D!