Roger Christian, original Star Wars designer, recalls making movie magic
The Elstree Studios junkyard after the filming of Return of the Jedi
In Star Wars, when was the last time someone actually died from being stabbed by a lightsaber? - Quora
Roger Christian on Forging the Lightsaber, Han's Blaster, and More from Star Wars: A New Hope, StarWars.com
Star Wars: 40th Anniversary
Luke Skywalker - Wikipedia
Star Wars at 40
Behind The Force Movie
What other material can block a lightsaber? - Quora