Polysteel was first mentioned in 2013 in the third instalment of Star Wars: The Essential Guide to Warfare Author's Cut, a series of posts on the StarWars.com blog featuring material cut from The Essential Guide to Warfare. The post was written by Jason Fry and Paul R. Urquhart and did not make clear the time frame of polysteels use.
Polysteel was first mentioned in 2013 in the third instalment of Star Wars: The Essential Guide to Warfare Author's Cut, a series of posts on the StarWars.com blog featuring material cut from The Essential Guide to Warfare. The post was written by Jason Fry and Paul R. Urquhart and did not make clear the time frame of polysteels use.
- The Essential Guide to Warfare