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How to setup dualextrusion with one hotend and two extruder

CarlJonasCarlJonas
in Questions & Answers
Hi guys,

i tried to get it worked but i didn't. I added a second extruder in the online configuration tool but what do i have to change in the config.h file? 

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Comments

  • RepetierRepetier
    Depend if both have a nozzle but share heater or both also share the nozzle.
    In forst case use SHARED_HEATER I think. Th eother solution is MIXING_EXTRUDER and you need to define the mixing ratios to use one or the other motor or both with a mixing ratio.
  • CarlJonasCarlJonas
    Okey i have one nozzle and one heater. So i have time activate SHARED_HEATER and MIXING_EXTRUDER?
  • RepetierRepetier
    No MIXING_EXTRUDER only. Mixing extruder maps everything to 1st extruder and then simulates 16 virtual extruders with 16 mixing ratios.
  • CarlJonasCarlJonas
    Mhh but it isn't a mixing extruder. i use a y-joined like the prusa multimaterial upgrade.
  • RepetierRepetier
    In that case use 2 extruders and set SHARED_HEATER to tell firmware that this is the case.

    You need to set select/deselect script wise to retract enough on extruder change. Also make sure to always select first extruder when disabling printer. Firmware does not remember which tool is active so selects first on startup.
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