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    Cura filement usage v duet

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    • peter247
      peter247 last edited by

      Hi , Im printing a test print with Cura which says that it will use 12 metres of filament , but duet says 32 metres . Ive tried the E Step calibration test which looks to be about right ?
      I`m using a titan aero , which is using a 3:1 gearing so is it calculating the filament based on stepper motor steps ?

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      • whosrdaddy
        whosrdaddy last edited by

        Duet uses relative extruder moves by default (M83).
        Cura uses absolute extruder moves by default (M82), are you sure both are setup the same?

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        • burtoogle
          burtoogle last edited by

          That 12:32 happens to be the ratio of 1.75 to 2.85 squared so I suspect that Cura thinks the filament is 2.85 dia.

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          • dc42
            dc42 administrators last edited by

            The Duet gets the filament usage from a comment that Cura wrote near the end of the GCode file.

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            • whosrdaddy
              whosrdaddy last edited by

              @burtoogle:

              That 12:32 happens to be the ratio of 1.75 to 2.85 squared so I suspect that Cura thinks the filament is 2.85 dia.

              That seems more plausible, the OP did not specify if actual the print was OK

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              • peter247
                peter247 last edited by

                Hi ,

                hat seems more plausible, the OP did not specify if actual the print was OK

                Yes it printed more or less correct a little Z axis problems with a layer slip , but not that bad for a set up print.

                I checked cura, Printer Machine > extruder1 , 1.75mm filament which is correct and a .4mm nozzle.

                he Duet gets the filament usage from a comment that Cura wrote near the end of the GCode file.

                o.k looked at the gcode in a text editor and what it says at the bottom of the screen is different to what`s imbedded !!!!

                ;FLAVOR:RepRap
                ;TIME:40953
                ;Filament used: 32.0279m
                ;Layer height: 0.2
                ;Generated with Cura_SteamEngine 3.2.1
                T0
                M190 S60
                M104 S210
                M109 S210
                M82 ;absolute extrusion mode
                G28 ;Home
                G1 Z15.0 F6000 ;Move the platform down 15mm
                ;Prime the extruder
                G92 E0
                G1 F200 E3
                G92 E0

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