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Start Gcode for custom build klipper machine with dual extruders


zocherg

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Posted · Start Gcode for custom build klipper machine with dual extruders

Hi all,

 

I searched around the inet, but did not come up with a solution so far. The problem is as follows:

 

I build an custom 3D printer with a switching extruder constisting of two orbiter extruders each with a e3dv6. Everything is working as expected. The machine code is fine and first dual extrusion kits were printed. For convenience I would like to adjust mit START_PRINT script which is mainly done, but I do not find a simple solution to hand over the temperature of the second extruder: 

 

START_PRINT BED_TEMP={material_bed_temperature_layer_0} EXTRUDER1_TEMP={material_print_temperature_layer_0} EXTRUDER2_TEMP={"need_a_cura_variable_here"}

 

It seems that all the cura temperature variables are not directly linked to a particular extruder (just the actiev one). Can you give hint, how to go on with this?

 

Thank you very much,

Georg

 

 

 

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    Posted (edited) · Start Gcode for custom build klipper machine with dual extruders

    You can specify the exact extruder to get the value from like so:

     

    EXTRUDER1_TEMP={material_print_temperature_layer_0,0} 
    EXTRUDER2_TEMP={material_print_temperature_layer_0,1} 

     

    Edit: originally, I mistakenly used the | (pipe) character instead of a , (comma). I have edited this to avoid confusion for people finding this via a search engine.

    Edited by ahoeben
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    • 3 weeks later...
    Posted (edited) · Start Gcode for custom build klipper machine with dual extruders

    Dear ahoeben,

     

    sorry for my late reply. I had overlooked your message. I will test it out and give feedback. Thank you for your support.

    All the best,

    Georg

    Edited by zocherg
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    • 1 month later...
    Posted · Start Gcode for custom build klipper machine with dual extruders

    Sorry to bring this up again. I just found the time to play with

     

    EXTRUDER1_TEMP={material_print_temperature_layer_0|0} 
    EXTRUDER2_TEMP={material_print_temperature_layer_0|1} 

     

    Unfortunately, these settings do not work and to not replace the expression {material_print_temperature_layer_0|0} with a float value. 

     

    EXTRUDER1_TEMP={material_print_temperature_layer_0}

     

    will do the job and replaces the expression with the temperature but just for the temperature of the selected extruder.  Are there any other ideas to go on?

     

    All the best,

    Georg

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    Posted · Start Gcode for custom build klipper machine with dual extruders
    On 12/19/2022 at 6:18 PM, zocherg said:

    Unfortunately, these settings do not work and to not replace the expression {material_print_temperature_layer_0|0} with a float value. 

     

    The delimiter used to be a comma, not a vertical bar?
    This example from an older post should still work:

     

     

    In addition: there are several placeholders for the selected '...extruder_nr'. This can be useful as well.

    For example:

     

    M104 T{adhesion_extruder_nr} S{material_print_temperature_layer_0, adhesion_extruder_nr}

     

    We use {initial_extruder_nr} in the start script for the Mark2 (if you need another example).

     

    Good luck!

     

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