Paper craft from 2d to 3d; Pepakura

https://www.youtube.com/watch?v=WEX5n6iE2II
how to use pepakura

https://www.youtube.com/watch?v=4cfqLrklu50
pepakura for mac

 http://www.tamasoft.co.jp/pepakura-en/
gd software


http://www.instructables.com/id/Design-Papercrafts-with-CAD-software/

Step 1: Papercrafting in the 21st Century

 

While there are many fantastic papercraft designers on Instructables (notably members like Kamibox.de or Robives), designing simple papercraft models or even converting basic 3D models into paper models is not too difficult. 
The purpose of this instructable is to provide a general introduction to Designing, Unfolding and Coloring your own papercraft models.  For this project, I will be walking through the process of creating a papercraft from the ground up- using a free online program called Tinkercad, the popular paper design program Pepakura, and free photo editing software Gimp. 

Other Available Software

• Google Sketchup- A free-trial software application that can export to Pepakura.  The software is relatively simple to use and is popular with designers such as Ninjatoes
• Metasequoia- A fantastic model editing software for correcting 3D models.  More on this later, but a good companion piece to Pepakura.
• Blender: A really powerful free 3D design modeling program with a variety of different options.  It's learning curve is a bit steep, however.  
• Autodesk 123D: Autodesk's new 123D Make program is a new software program for creating and 3D printing objects.  They have a "paper cut out" option which is decent for the most part, but their "Slice" option is most impressive.  For more on paper 3D printing I suggest this instructable

Also, you'll want to download a free PDF converter software, to export from Pepakura into GIMP.  I suggest using Cute PDF.