Paolo Donnicola created some large 3D models in cardboard based on Blender models.
For an exhibition I made the 3D models for some card board exhibit. The 3D data and the visualisation were done in Blender. Later then they created the data for the card board cutting machine.
I exported the 3D data as obj and one could cut the models in slices (this was done with Rhino). For each exhibit they had to slice the models in over 100 slices. The slices have been cutted from a cnc card board cutter. The maschine also made a glue line. You can find some pictures here
See this video: