Fan Speed idea/suggestion

[Blaquelight 0]

It would be very useful if under Cooling there was an option for what layer/height you want the fan to turn on and then proceed with the incremental increase. As of now I can have my Initial Fan Speed be 0%, so it is off, and then I can set a number of layers/a height for the fan to then achieve it's maximum speed by, set by the Fan Speed, but it starts at the 2nd Layer. I'd like to see the Initial Fan Speed either replaced with or enhanced by Initiate Fan at Layer. Sometimes PetG and other filaments can benefit from no fan at all for the first few layers.

[Slashee_the_Cow 619]

If you go to Extensions > Post Processing > Modify G-Code you can add a script called "Advanced Cooling Fan Control" which does exactly what you're looking for. If you need any help with it, ask @GregValiant

[Blaquelight 0]

I should have added that I am aware you can do Post Processing scripts but it seems it would be a useful addition to the interface, I think.

[Slashee_the_Cow 619]

You're more than welcome to submit a feature request, but this is the sort of power user thing they probably don't want to clutter the interface with, and the script is already included, so I'm not sure how well it would go.

[GregValiant 1,492]

I could have added it as a plugin rather than a post processor, but it alters or obsoletes some of the Cura settings.  People are used to those settings.  In addition it would lose flexibility.

 

As a post-processor there can be multiple instances of the script running with different settings.  You could start with "By Layer" and have the fan off until layer 20 when it would go on at 50%.  Then at layer 50 a second instance of the script could be configured for "By Feature" and the fan speeds would be adjusted for skins, outer walls, inner walls, etc.

That would be difficult (maybe impossible) with a plugin, or as a fixed feature within Cura.