Hexagonal Hand Fan

prusaprinters

<p>This hand fan has a mechanical look with a simple opening and closing mechanism. I added a standard blade in the files if you want to create your own fan design.</p> <p><b>Parts</b><br/> This hand fan design consists of only four different parts and prints without any supports.</p> <p>The base blade has an attached cylinder to stack the other blades on top of each other. A bolt holds everything together by screwing into the top of the cylinder which has inner threads.</p> <p>The blade has two orientations, a stopper on one side and an inset on the other. This mechanism limits the blade rotation. In total there are 11 of these blades needed for the fan.</p> <p>The top blade is very similar to the other one, but the inset removed to create a flat top surface. So it is entirely optional.</p> <p><b>Files</b><br/> I made the fan in Blender. If you want to alter the design, I included the blend file in the attached files. The model has an animation of opening and closing of the fan, scrub the timeline to preview the rotation of the blades.<br/> I also included an empty fan blade model, which you can use to make a custom design.</p> <h3>Print instructions</h3><p>I used the standard '0.2mm Quality' for my printer settings and tweaked the infill and the top/bottom solid layers amount.</p> <p><b>Infill</b><br/> Having a lightweight and sturdy fan is key for displacing air. Therefore I used a low infill ratio of 10% with the honeycomb fill pattern (for aesthetic reasons).</p> <p><b>Horizontal Shells</b><br/> In order to see the infill on the clear PETG blades, I decreased the top and bottom solid layers to 2.</p> <p><b>Materials</b><br/> I used two different PETG filaments for the 11 blades for the fan in the photos. (Prusament PETG Clear, Prusament PETG Prusa Galaxy Black)</p>