Hot end fan cover Anycubic i3 Mega

thingiverse

I decided to give it a shot, removing the holes that cover the hot end cooling fan and designing a fan cover in preparation for my newly ordered Sunon fans - one for the hot end 40x40x10 mm and one for the motherboard fan 50x50x10 mm. Too bad I had the idea too late to use a decibel meter on my phone to measure the noise level in its original state, as you all know it is rather loud. After cutting out the big hole, I measured 71.8 dB and the whistling noise was gone, really making noticeable less noise. It's time to print the fan cover. After installing Version 1, it started to make more noise at 73.9 dB, like sitting in a driving car as the decibel meter shows. So back to the drawing board and print a new one, Version 2. After installing it made the same noise level as no cover, the design was okay. After receiving my two new Sunon fans, it was time to install them and test the noise level again. BIG difference - a stunning 64.6 dB, the level of a normal conversation. This was with both fans running. Now I am eagerly waiting for my TMC2208 stepper drivers to arrive.