a demonstration for the basic technique of pleat tessellations a.k.a. organic tessellations a.k.a. pureland tessellations.
first folded by Paul Jackson ( http://www.origami-artist.com/ )
later explored by Goran Konjevod ( http://organicorigami.com/ )
more information on Flickr: https://flic.kr/p/RuVR4h
