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Volumetric extruding.


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Posted (edited) · Volumetric extruding.

I have been searching for a while now and cannot find a solution. 

I am using Cura 3.2.0 connecting to a Duet Wifi 1.21 with a coreXY and a diamond hotend. Every time i find some information on setting up to enable firmware retract I am told to set the GCode flavor to Reprap (volumetric). Do not have that as an option. I have Marlin (volumetric), but the duet does not like that flavor very well. I have read I can use Ulticode because its volumetric, but said I could not use Start GCode. But have tested that and it seems I still can. So not sure the version they were using.

 

Will there be any compability issues with using Ultimaker 2 flavor? 

Am I missing the RepRap (volumetric) option for some reason?

If anyone has a similar setup, mind sharing some settings?

 

Ed

Edited by Foulkn
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    Posted · Volumetric extruding.

    reprap volumetric I believe is identical to marlin volumetric.

     

    With "volumetric" the extruder values are in mm^3 but with normal mode the extruder values are in mm (linear).  In normal mode, cura needs to know your filament diameter.  In volumetric mode the printer needs to know your filament diameter.

     

    volumetric is something that Ultimaker invented so I'm quite surprised that the Duet would support such a thing.  The way Marlin (the printer firmware) detects whether a gcode file is in volumetric mode versus regular mode is it looks at the comments at the top of the gcode file and somewhere in there (no idea where) is a hint of some sort that Marlin looks for to decide.

     

    I'm not sure of any good reason to use volumetric unless you swap between 1.75mm and 2.85mm filaments often and want to print the same part in both, one after the other and don't want to create 2 gcode files.  Does anyone ever do this?  I think not.

     

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