paperlined.org
apps > pumping_station_one > laser_cutter > printed_pepakura

document updated 9 years ago, on May 28, 2014

This recommendation:

There are many ways to create a low polygon model that Pepakura Designer can read. ... Since there were far to many faces in this mesh, I used [AutoDesk] Maya to create a low-polygon model, using the high-polygon model as a template. Simple reduce functions will work well, but I wanted a little more control over where the folds would be."

Blender's Decimate function will work too.