"Cave Johnson here, introducing the consumer version of our most popular military grade A product... The Turret. How do we get so many bullets in them? Like this. Plus they don't just shoot the bullet... They shoot the whole bullet, thats 65% more bullet per bullet."
Papercraft of the box the Turrets are shipped in. I glued the pieces to actual cardboard to make it like a real cardboard box. Didn't take me long, took about two and a half hours to do. Every side was cut separately, trimmed, and glued into place, and received this awesome result. I also made it so it can be opened and closed, so stuff can be stuck inside it. I think I'll try and make a bigger one so I can use it as a carrying case for my paper model Turret.
You can get the model from here cubeecraft.com. They also have some other models related to Portal.
If you want the more detailed paper models of the cubes, go here:[link]
I do not own the model, nor did I design it. I found it, printed it out, and built it.