Single axial fan duct/shroud for Anet A8/Prusa i3
Description
**DISCLAIMER**: I am not an engineer, have no idea what I'm doing and never ran any fluid simulation etc to validate this design. Depending on the fan you choose, this mod **may** and **will reduce** the airflow you are able to deliver to the model. The stock fans on Anet A8 are garbage, acoustically speaking. After replacing the stock bearings with [these printed ones](https://www.thingiverse.com/thing:16813), the fan noise became even more apparent. The radial blower-style fan became by far the biggest source of noise in my printer. The axial one cooling the extruder is also pretty annoying when the printer is idle. This part replaces them both with one 40mm axial fan. I went with NF-A4x10 FLX, which is 10 mm thick, but I'm also including a version for 20mm-thick fans like the NF A4x20. That one would probably deliver much better performance. The model cooling outlet mimics the 5015 fan outlet, so it should work with most, if not all, fan ducts (I used the [semi-circular one](https://www.thingiverse.com/thing:1954001)). I chose to connect the single fan in place of the extruder fan. Since it's always set to 100%, it eliminates the danger of heat creep if I keep the printer on preheat for too long, and ensures I get as much airflow as possible all the time. There are some drawbacks too, of course: the first layer adhesion may suffer. If this happens to you, you may want to try using the model fan port instead. In my case, compared to the stock fans, I got slightly worse bridging performance and a tiny bit more stringing. On the other hand, my overhangs became smoother and more structurally sound, and the fan is completely inaudible unless you literally put your ear against it.
Statistics
Likes
1
Downloads
0