Confusion over extruder fans


I have two fans on my extruder. The fan on the heatsink of the E3D v6 and the fan on the printed adjustable cowl.

Am I right in thinking that the fan on the heatsink runs all of the time at fixed speed and the fan on the adjustable cowl is the one that is turned on and off an speed modulated by the controller OR should they both be turned on and off and modulated?


Hi itbee,

Your first thought is right. The 30mm fan that is mounted around the heatsink of the E3D runs all the time and the other fan, the 40mm one, usually runs after the first layer has been laid done.



Thanks Kevin.

It was just one of those moments of self-doubt.