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Three blade windmill assembly
40 degree angle 40 mm wide blades. Flat with no airfoil. There are two versions. One with an 8.6 mm hole and a 10 mm hole version. Use whatever suits your needs best. The small hole version fits threaded rod that also fits common 608 skate bearings. Useful for driving animated whirligigs and other yard/garden decorations. Perhaps hook it up to a small DC motor and drive some LEDs or charge a battery. If you have a larger or smaller bed use Sketchup's push/pull tool to move the ends of the wings in or out as needed.