This is a simple model which can be folded from several different polygons. The version from hexagon is probably nicest, but you can certainly use a square, a hexagon, and an octagon. I’m not sure about pentagons, heptagons (odd number of sides) or polygons with more sides than eight. There is a color-change so the center has a different color than the blades of the pinwheel. The grid is 8 divisions in each of the principal directions. The Crease Pattern below is for the hexagonal version but version for other polygons are simple to deduce from it.
Folding instructions to accompany the CP are as follows:
- start with a hexagonal grid (8 divisions in each direction)
- make hexagonal twist in the middle
- unfold flat
- valley-fold a one grid unit wide margin around the hexagon (3D, doesn’t lie flat)
- re-fold the hex twist, keeping the color-changed margin folded all the time
- purse the hexagon in the middle