"no cooling on first layer" sets fan to 100

[Brace91]

OrcaSlicer Version

1.8.0-beta1

OS version

macOS 14.0

Additional system information

No response

Printer

Bambu X1

How to reproduce

1, in filiment profile set no cooling in first layer to x.
2, in preview you will see that the first x layers fan speed is 100

Actual results

First layer fan speed is 100

Expected results

First layer fan speed should be 0

Project file & Debug log uploads

Air Boat Orca 2.3mf.zip

Checklist of files to include

• Log file
• Project file

[SoftFever]

Can you provide more details? It works properly as what I can see

[Brace91]

Plate 15 worked as expected but here’s a screenshot of plate 1 with the issue.  <img width="1728" alt="Screenshot 2023-11-05 at 2 05 02 PM" src="https://github.com/SoftFever/OrcaSlicer/assets/110748211/dbb1535e-1f3a-4203-9c96-d19fb705b9dd">

…

On Nov 4, 2023, at 12:57 AM, SoftFever ***@***.***> wrote: Can you provide more details? It works properly as what I can see <https://user-images.githubusercontent.com/103989404/280448836-9e26dfa9-b451-49f6-9026-2f3c6c9eb170.png> — Reply to this email directly, view it on GitHub <#2600 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/A2M6EM4QI5WKAFJBRR67P4DYCXKK3AVCNFSM6AAAAAA64VUS7CVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTOOJTGM2TGNZVHA>. You are receiving this because you authored the thread.

[dartrax]

I have the same problem and I found that it happens when "Fan speed-up time" or "Fan kick-start time" is set in a Multicolor print.
This bug is present in 1.8.0 release.
Here is an example.

Fan speed bug.zip

[github-actions]

Orca bot: this issue is stale because it has been open for 90 days with no activity.

[dartrax]

Still present in 1.9.0 release

[cubitik]

Still present in 1.9.0 release

Update: Still present in 1.9.1 release. Doesn't show a full fan speed in preview but print starts with full fan speed.

[github-actions]

Orca bot: this issue is stale because it has been open for 90 days with no activity.

[dartrax]

Still present in 2.1.0-beta

[github-actions]

Orca bot: this issue is stale because it has been open for 90 days with no activity.

[dartrax]

unstale

[real-artswan]

2.2.0-beta confirming, setting fan speed-up and kick-start to 0 solves it

[audemaeva]

Still present in 2.2.0
I set my temp this way (see below) and nevertheless the fan will always run at 100% when the print starts

[fabio-s-franco]

2.2.0-beta confirming, setting fan speed-up and kick-start to 0 solves it

I believe this may not work for everyone due to timing. In my case if I execute this on the console:

M106 P3 255
UPDATE_DELAYED_GCODE ID=part_fan_off DURATION=2

The fan does not stop.

If instead do this:

M106 P3 255
UPDATE_DELAYED_GCODE ID=part_fan_off DURATION=3

The fan reaches full speed for short moment and then turns off.
This is the macro for the gcode if anyone wants to test (Delayed gcode must be enabled in klipper):

[delayed_gcode part_fan_off]
gcode:
    M106 S0

And finally, my workaround is to use this on before layer change (Machine G-code in OrcaSlicer) and checking whether it is about to start the first layer:

{if layer_num == 0}
  UPDATE_DELAYED_GCODE ID=part_fan_off DURATION=3
{endif}