Book
Open-Back Hexagon Twist (Eric Gjerde)
This model is still listed as one of the beginner's projects, but I did find it a bit more challenging than the previous ones. Also, I first folded it with transparent paper, and I didn't like the effect as much. And then there remains the question - which is back, and which is front? I prefer this side of the model, for a front view check https://www.flickr.com/photos/30755467@N04/3284221806/.
Paper: 19.5cm square of stiff paper, 115gsm
Star Puff (Ralf Konrad)
I was really intrigued by this model, because of its 3-d finish. Apart from having seen faces and such formed from tessellations, I had really associated tessellations with being essentially flat. Another surprise was that you first have to fold spread hexagons, and that model then very easily transforms into the star puff.
Paper: 19.5cm square of transparent paper
Model: 4.1cm x 12.2cm x 0.8cm
Spread Hexagons (Eric Gjerde)
Yesterday night I first tried the model on a triangle grid with 16 pleat divisions to get a feel for how to do the model. I then moved to transparent paper, and had this stupid idea of doing a triangle grid 64 pleat divisions instead. Hours later... this is the result. This is what robs my sleep!
Paper: 19.5cm square of transparent paper
Model: 15.3cm x 13.7cm