@goury
@dc42
And why not add another fan-Advance for the cooling fan of the heatbreak of the extruder:
That Needs to be spun up before retract, but could be considerably lower when feeding out material.
Two extreme examples:
A complicated part with endless retracts that need to keep the heatbreak cool so with all the retracts the heat doesn´t slowly go/creep up the heatbreak-tube, with 100% pwm for that fan.
An endless spiral Vase, that has 0 retract (oh wait, when the part is finished there is 1 retract at the end) which could run considerably quieter and consumes less electricity, e.g. with the same fan on a pwm of ca. 25-50% because the heat is pushed out way more with the filament.
Since fans take time to change speed, there would need to be some sort of look ahead, that compensates for ca. 1-2seconds lag of the fan.
Lucas
