Beginner Project No. 7
Open Back Hexagon Twist tessellation is the seventh of the Beginner Projects in Eric Gjerde's Origami tessellations. This pattern is very similar to 220.127.116.11 and Pinwheel tessellation.
This pattern has a new type of twist called open-back-hexagon twist. The other one is the very old triangle twist.
Again for this, I strongly suggest marking crease pattern beforehand, since open-back-hexagon-twist has additional creases other than triangle grids. It is very easy to fold once it is pre-creased. I took the help of a ruler to fold along the diagonal of parallelogram for the open back hexagon twist.
After trying out the open back triangle twist in Pinwheel tessellation, I found this pattern easy to follow. I loved both front and back view of this tessellation.
Reference: Origami Tessellations by Eric Gjerde
No. of units : 1 sheet of paper
Paper size : 8.5 inch square sheet
Paper used : Color printer paper
Difficulty : Intermediate (But after folding 6 tessellations I felt this rather easy to fold) I didn't get stuck anywhere. Follow the CP in the book.
Time : I took < 2.5 hours