Fan speed

Discussion of Ultimaker's open-source Cura software
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larsl
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Joined: March 2nd, 2018, 11:00 am
3D Printer(s): Micro 3D

Fan speed

Post by larsl » March 2nd, 2018, 11:19 am

I run Octoprint on a Pi. Cura 15.04 is the slicer. After slicing I get a the following warning "Print warning No fan speed has been detected in this file which could cause the print to fail". I am 100% sure there is a line stating the fan speed. The fan doesn't start either.

Please help
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IMG_20180301_094013.jpg

GrueMaster
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Joined: March 15th, 2017, 8:46 pm
Location: Oregon
3D Printer(s): Hictop 3DP-17, Hictop CR-10S

Re: Fan speed

Post by GrueMaster » March 2nd, 2018, 9:10 pm

I haven't used Octoprint to slice. I use the latest Cura, then send to Octoprint.

Having said that, I looked at the Octoprint settings, and I don't see anywhere to set the fan speed. Did you create a cura profile that had that, and upload it to Octoprint? Is there a way to inspect the gcode from Octoprint slicing? If you can examine the resulting gcode, you might compare it with the gcode generated on your pc using the same version of Cura.

larsl
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Posts: 3
Joined: March 2nd, 2018, 11:00 am
3D Printer(s): Micro 3D

Re: Fan speed

Post by larsl » March 3rd, 2018, 9:27 am

Thank you GrueMaster.
Octopi (Octoprint on Raspberry pi) includes the plugin CuraEngine 15.04. That is what I have been using for making profiles and slicing.
I have also tried to slice outside Octopi in Cura-2.6.2, with settings you can see in the attached file cura.jpg the result is the attached file M_test_2.gcode.
When I try to print that gcode file I recieve the warning about no fan speed.
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M_test_2.gcode
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cura.jpg

GrueMaster
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Posts: 323
Joined: March 15th, 2017, 8:46 pm
Location: Oregon
3D Printer(s): Hictop 3DP-17, Hictop CR-10S

Re: Fan speed

Post by GrueMaster » March 3rd, 2018, 11:15 am

I think I see the problem. Your screen shot indicates you have an M3D printer. I think this has its own custom fan gcodes. I did a little googling and found this link which includes a profile for Cura 15.04. Try importing that and see if it helps.

I also looked at your gcode, it does accurately turn on the fans after the first layer:

Code: Select all

;LAYER:1
M106 S255
Beyond that, not sure what else to tell you.

BTW, you should share your experiences and tips on this printer. There is a subtopic specifically for this printer here.

larsl
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Posts: 3
Joined: March 2nd, 2018, 11:00 am
3D Printer(s): Micro 3D

Re: Fan speed

Post by larsl » March 3rd, 2018, 12:59 pm

Once again thank you.
I imported files from the link you gave me. Sorry to say with the same result.
Maybe this is the end of the road. The Octoprint didn't behave like this in the beginning, so I think I will reinstall it.

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