Jump to content

Unexpected 1st layer behavior


Recommended Posts

Posted · Unexpected 1st layer behavior

I currently have the following Start Gcode for my printer:

M355 S1 ; Enable lighting
G28 ; home all axes
M104 S{material_print_temperature_layer_0} ; Extuder
M140 S{material_bed_temperature_layer_0} ; Bed Temp
M116 ; Temp Wait
G1 Z5 F5000 ; lift nozzle

material_bed_temperature_layer_0 inserts, as expected, the value for "Build Plate Temperature Initial Layer"

material_print_temperature_layer_0 WAS, at one time, inserting the value for "Printing Temperature Initial Layer" (currently 230).  However it has recently started putting in 210 and that value is nowhere in the Material settings that I can find.


Any assistance would GREATLY be appreciated.  I have to save and edit the file every time which is a hassle.

  • Link to post
    Share on other sites

    Posted · Unexpected 1st layer behavior

    I had the same problem.   It's a regression bug in Cura 3.1, and is supposed to be fixed in 3.2.    



    As a workaround, you could just change your startup gcode to S230 for now, then change it back whenever 3.2 comes out.   Not ideal, but at least you won't have to edit every gcode file.




  • Link to post
    Share on other sites

    Posted · Unexpected 1st layer behavior

    I found a workaround by accident.   If your startup gcode contains no reference to any print temperatures (no {material_print_temperature} variants, even in a comment), Cura will automatically prepend the gcode

         M104 S{material_print_temperature_layer_0}

         M109 S{material_print_temperature_layer_0}

    before your startup code, with the correct temperatures.


    This is going to wait for the nozzle to get fully up to temperature before doing anything else (including heating the bed) so it might not be the best solution.



  • Link to post
    Share on other sites

    Posted · Unexpected 1st layer behavior

    Aye, thanks for the responses guys.  Cura 3.1 has been acting stranger and stranger giving me different results each time the gcode is generated, reading part of a circle as a straight line (or at least telling the printer that) and all sorts of other buggy behavior.  Mind you the .stl file is 100% manifold.  I'll wait for 3.2 and go back to slic3r for now :(.  I really LOVE all of the options Cura gives allowing me to correct various issues and giving me cleaner prints.

  • 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
          • Like
        • 48 replies
    • Create New...