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Ultimaker 2+ flow rate modifier and material change


glx
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Posted · Ultimaker 2+ flow rate modifier and material change

Hi,

 

I just noticed that there seems to be a problem when selecting a different flow rate while printing (e.g. 150%). After the print finished and I change the material right after that print, the material seems to be unloaded with the same modifier. That wouldn't be that much an issue but it also loads the next material with that modifier so it crashes into the nozzle at the high loading-speed and the feeder grinds the filament away.

 

I'm using the original firmware version 3.3.0.

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    Posted · Ultimaker 2+ flow rate modifier and material change

    How do you change the flow rate? In the "Tune" menu during a print, in the material settings (on the printer) or somewhere else with a gcode command?

    And out of curiosity: why so much? Is it a special material?

     

    Anyway: the standard firmware does not reset the extrusion multiplier at the end of a print, only at the beginning.

    It should be possible to add an explicit gcode to the end-script (somewhere in the slicer settings - depending on the slicer you use).

     

    M221 S100 ; reset extrusion multiplier

    https://reprap.org/wiki/G-code#M221:_Set_extrude_factor_override_percentage

     

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    Posted · Ultimaker 2+ flow rate modifier and material change

    I changed the flow rate within the tune-menu after started printing.

     

    17 hours ago, tinkergnome said:

    And out of curiosity: why so much? Is it a special material?

     

    I was basically just playing around with some settings, I have some nylon that seems to have no layer adhesion at all, so I tried some things to work against that. 

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