This is my 3D-printable 6510 blower fan that uses a stripped down version of a 40 mm fan. you just basically cut off everything around the motor including the fan blades, and then the motor core can be press fitted into the hole, or can be glued onto the base! you will have to adjust the height of the top part, because there are so many different fan motors!
The author marked this model as their own original creation.