Now that the blades are exposed, it's time to remove them. Holding the blade piece in place with another hand, twist off the knob in the center of the piece.

Take note of the direction that you should be spinning the knob for loosening, which is labeled as clockwise on this fan (not lefty-loosy!) If you're having trouble twisting the knob off, you may be twisting it the wrong way!

Once loosend enough, the knob should spin right off.