UPDATE 23.07: I'll be away this weekend, but when I come back I'll post plans for the rest of the assembly (not my design, it actually came with a magazine), but it's only fair you get the chance to blow air in your face ;) A working (actually blowing wind) fan I made. The picture is a small motor assembly my roommate had laying around. Since the motor isn't all too powerful, doesn't blow very far. Feel free to print it, it has a 4,5 hex hole on the bottom. Turning direction is clockwise.For ABS: Print with support (2mm rectilinear) and at least 10 lines of brim. Preferably two perimeters and fill 100%. It takes about an hour at 25mm/s fill and outline. Print with the flat part of the head down (hex opening on the printbed). Have fun!