check out my Upgrade Guide: https://www.thingiverse.com/thing:3409767
A hotend cover or case for the Anycubic I3 Mega.
I changed the little holes from the original case from Anycubic to a honeycomb style.
With these bigger holes more air can get into the fan.
But it prevents that and bigger chunks can fall into the fan (or your finger ^^).
Also, i swapped the right 40mm hotend fan.
I bought this one, it´s really silent and works perfectly:
Just cut the old wires, and use this round yellow things included with the fan, put the new and the old cable in and press it. I have included pictures.
The original left fan is very good, keep it.
This is a remix of the cover by sparky0815.
Support is need for the overhang in the back. You don´t need support for any screw hole.