A very simple model.
This model is easy to print and assemble.
How to achieve this effect?
Consider the process of the points.
1. Drawing the body and button fans.
You can create designs in the program 123D Design, SketchUp or other.
I created this model in the program 123D Design.
2. Load the model in the slicer and set print settings.
To the bottom and the lid of the fan to get a "Honeycomb", put "0" in the Top and Bottom.
As well as select fill percentage. I have 20%.
3. Print six or seven different color blades and fan button.
I use ABS filament in different colors.
4. Putting the fan.
Use a fan in hot days and will have the coolness!