
This is the first model for which I
calculated the base mathematically (rather than arranging freehand) so that
all of the circles are perfectly tangent to each other  I wrote an
article outlining
this process which has now been posted on the
Origami USA
website. After designing this model, I began using trigonometry
to precisely construct each of my crease patterns. Even though this
requires a little more time at the beginning of the design process, it
actually saves time later  I can make small adjustments to flap
proportions, and the calculations readjust themselves automatically. 
