New Fan Full feature @ Cura 13.11

[Dim3nsioneer 558]

I wonder if someone else has made similar experiences: If I insert '0.3' in the expert settings for the new Cura feature 'Fan Full On At Height' then the fan runs with only the half PWM at this height. The full PWM is set one layer layer.

I use 0.2mm for the first layer and then a layer height of 0.1mm. I actually want the fan to run fully at the second layer but not at all at the first layer. How can I achieve this?

Daid, maybe you can write a few words about how this new fan feature works? Thank you!

 

[Daid 306]

Currently it is calculated with:

fanSpeed = fanSpeed * layerNr / fanFullOnLayerNr

Where fanFullOnLayerNr is calculated by: (fanFullHeight - initialLayerThickness) / layerThickness + 1

In your case:

fanFullOnLayerNr = (0.3 - 0.2) / 0.1 + 1 = 2

Speed at layer 0: 100% * 0 / 2

Speed at layer 1: 100% * 1 / 2

Speed at layer 2: 100% * 2 / 2

fanFullOnLayerNr = (300 - 200) / 100 + 1 = 2

So there is a small bug, as the layers start at 0. Entering 0.29 should solve it for you. Also fixing it for the next release.