Hi I recently upgraded my CR-10S motherboard to the SKR 1.3 with TMC2208 drivers, in addition, I added a 2 in 1 out extruder system, but I am unsure of how to set it up in Marlin. If anyone could provide me a list of the lines of code I need to comment / uncomment / change, or any other advice it would be greatly appreciated.
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$\begingroup$ Just a follow up. What retraction settings do you recommend when using a 2 in 1 out nozzle? I’m having a problem with clogging and I think different retraction settings might help. $\endgroup$– Joe RacanatiCommented Feb 7, 2022 at 18:21
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$\begingroup$ @JoeRacanati If you have a new question, please ask it by clicking the Ask Question button. Include a link to this question if it helps provide context. $\endgroup$– 0scar ♦Commented Feb 8, 2022 at 7:43
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1 Answer
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You need to change the amount of extruders in the Configuration.h:
Set 2 extruders by defining:
// @section extruder
// This defines the number of extruders
// :[0, 1, 2, 3, 4, 5, 6, 7, 8]
#define EXTRUDERS 2
Define that you have a single nozzle:
// For Cyclops or any "multi-extruder" that shares a single nozzle.
#define SINGLENOZZLE
If you want to switch filament during a print, you need to write tool loading and unloading (tool changing) scripts for the slicer you use, also do print a filament prime/wipe tower that is large enough to purge the filament to prevent color mixing.
In case color mixing, you do not set the amount of extruders, instead you need to define that mixing is being used:
#define MIXING_EXTRUDER
furthermore, the amount of mixing stepper need to be defined:
#define MIXING_STEPPERS 2