Anet A6 Fan Duct

thingiverse

Since the original fan channel is aimed directly at the nozzle, I revised its design to direct airflow more effectively against the nozzle tip. I created two versions of the fan duct, one with lamellas (FanDuctLaminar.stl) and one with only internal supports (FanDuctStd.stl), in order to optimize air flow and minimize turbulence. To achieve a directed airflow towards the surface, I employed the principle of laminar flow by introducing multiple lamellas into the duct. This approach reduced the overall volume flow but resulted in a better alignment of the flow, allowing more air to reach the printed part's surface. ###Note: 04.06.2019: After using the lamella duct (FanDuctLaminar.stl) for some time, I encountered issues with it. On one hand, the cooling effect on very thin-walled components was so intense that the layers failed to stick together. The only solution was to reduce fan power. On the other hand, there was a reduced cooling performance on the opposite side of the fan due to the lack of air turbulence caused by the well-directed flow on the other side. Therefore, I can only recommend using the fan with lamellas in very limited cases. However, with the improved standard version (FanDuctStd.stl), I achieved excellent results. I conducted tests using salt to illustrate the difference. In both cases, the nozzle was 1mm above the surface.   _Printer settings:_ Material: PLA, ABS, PETG, ... Resolution: 0.2mm Wall thickness: 1.2mm Infill: doesn't matter Support: no