Paper: irregular shape cut from Elephant Hide, 20cm wide, 15.8cm high
Model: pentagon with a diameter of 6.2cm, pressed flat 3mm high (expanded 2.75cm)
With some lessons learned while folding my first whirlpool spiral I went about my second one. This time round it took less than an hour. Partly this is because I decided to fold a simpler spiral - but mostly it's because I now knew where I was going and how to speed up the process. Phew, now it doesn't seem as impossible anymore to fold a bunch more of these!