Basic 10cm fan - 2mm & 3mm axle diameter

This is a Remix of another fan blade design. I tried using the original design at https://www.thingiverse.com/thing:1822959 but the hole on the coupling was too shallow to stay on my motor, and too small to drill a correctly aligned hole through. Thus, this larger blade was created, with a pre-fabricated hole through its center, eliminating the need for any drilling. However, if drilling is needed, the hole is present to promote the correct alignment of the drill bit. I have included 2 similar S