Jump to content

Cura not using Relative Extrusion


Sporech

Recommended Posts

Posted · Cura not using Relative Extrusion

Hi,

 

With Cura, I am trying to use relative extrusion. I have found the setting and it was already ticked. I made sure to slice my model with the setting enabled, yet looking at the GCode, it's using absolute extrusion?

image.png.d848ff6a6606e264afaafa851e41e18d.png

 

image.thumb.png.9cc24ab7ae1ec1588348ce2329cc0281.png

(Extruder argument clearly counting up)

 

Does anyone know if this is a bug?

 

Thank you

  • Link to post
    Share on other sites

    • 1 month later...
    Posted · Cura not using Relative Extrusion

    Hi,

     

    Sorry for the delay, my printer's start code doesn't contain a M82 instruction. Cura seems to be ignoring the relative extrusion setting, are there any other settings that could be overriding it?

     

    Thank you

  • Link to post
    Share on other sites

    Posted · Cura not using Relative Extrusion
    On 12/30/2021 at 9:27 PM, GregValiant said:

    You have ticked the setting "Relative Extrusion" in the "Special Modes" section?  Cura should be adding an M83 right after your start gcode.

    Yes, relative extrusion is enabled under special modes, but it is being ignored.

  • Link to post
    Share on other sites

    Posted · Cura not using Relative Extrusion

    With your model loaded and Cura set up ready to slice, use the "File | Save Project" command and post the 3mf file here.  I would assume it's a setting somewhere and it should show up in a project file.

  • Link to post
    Share on other sites

    Posted · Cura not using Relative Extrusion

    Sure, do take a look 

    UM3_test_cube.3mf

  • Link to post
    Share on other sites

    Posted · Cura not using Relative Extrusion

    "This setting has been hidden by the active machine and will not be visible."

    So it's an Ultimaker printer thing rather than a Cura thing.  It's called out in the base "ultimaker.def.json" definition files as an override.

     

    "relative_extrusion":
            {
                "value": false,
                "enabled": false

     

    Untitled.thumb.png.7f963afb09c2ed62f8f787a880a1363b.png

    • Like 1
    Link to post
    Share on other sites

    Posted · Cura not using Relative Extrusion

    Excellent! Thank you so much for finding that. Where are the machine JSON files saved?

  • Link to post
    Share on other sites

    Posted · Cura not using Relative Extrusion

    In Windows they are in "...Program Files\Ultimaker Cura 4.x.x\resources\definitions".

    I'm not very familiar with the UM line of printers but I would assume they put that in because Relative extrusion isn't quite as accurate as Absolute extrusion.  I'm not sure why that is but it may have to do with the way the numbers are rounded during the calculations.

    • Like 1
    Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
        • 0 replies
      • Ultimaker Cura 5.6 stable released
        Cura now supports Method series printers!
         
        A year after the merger of Ultimaker and MakerBotQQ, we have unlocked the ability for users of our Method series printers to slice files using UltiMaker Cura. As of this release, users can find profiles for our Method and Method XL printers, as well as material profiles for ABS-R, ABS-CF, and RapidRinse. Meaning it’s now possible to use either Cura or the existing cloud-slicing software CloudPrint when printing with these printers or materials
          • Confused
        • 48 replies
    ×
    ×
    • Create New...