The Nintendo 3DS is going to be released on 03/27/2011, but you can have a 1:1 paper version of it in a few hours for free!
It can do basically everything what the original one can do - except gaming (and the WiFi-connection doesn't work - in case that disappoints you).
Attention: This is not an easy model. I took care to keep important details, nerd-spoken it is not an Arcade-version, it is a Simulation-version.
The full PDF is downloadable at http://www.kamibox.de
Step 1: History
No one cares for this step. It is completely unnecessary but I feel the desperate urge to tell something about the 3DS and the development of the papercraft model in order to give the Instructable an intellectual touch.
The Nintendo 3DS is the sequel generation of the Nintendo DS, released 6 years ago. The Nintendo DS itself is not a sequel to any generation, it came 5 years after the Game Boy Advance, but doesn't call itself a Game Boy.
As the Nintendo DS had 4 versions, the Nintendo DS Classic, Nintendo DS Lite, Nintendo DSi and Nintendo DSi XL, which all belonged to the same handheld-generation, it is inevitable that the 3DS will also have other versions, which may come in 1-2 years. The current design resembles that one of the Nintendo DS Lite, as shown in the comparison below.
The most innovative feature is the 3D-without-glasses effect on the top screen, the lower screen is touch-sensitive. Additionally to the original DS, it has a slide-pad, 2 outer cameras to take 3D-pictures and play AR-games, one inner camera, Street-Pass etc.
The papercraft model of the 3DS is already a few months old, but the design was minimally changed and so I had to edit the model a bit. I took all size details and pictures that had been released as references and I hope that it is very close to the original one.