Behind the Scenes of The Force Awakens

The final lightsaber battle in The Force Awakens has something that Star Wars never had before: real light sabers. No, they were not lasers, but the props actually lit up instead of being illuminated in post-production. That was a tech breakthrough, since they also had to be tough enough to clash with each other. That's just one of the things we learn from the behind-the-scenes report on the forest scene on Starkiller Base.