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I've got a Creality CR-10S to which I did a little soldering and added another extruder, using e3d's Chimera+ (two hot ends with a fixed separation).


I couldn't take the CR-10's definition and add a head, I forget what I started with... But every time it gives me trouble, I wonder if the definition is the source of my problems.


Can anyone suggest the most reasonable way to create a definition? With the new version of CURA, my #2 extruder seems to be running at 10x speed and I'm not sure where to start.

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Cura 3.5 has made it easier to change a single extruder definition to a multi-extruder definition, by requiring an extruder definition for the single extruder.


* Make a copy of the single extrusion definition (creality_cr10.def.json -> creality_cr10_dual.def.json)

* In creality_cr10_dual.def.json, change the name metadata and  "machine_extruder_trains" metadata:

            "0": "creality_cr10_dual_extruder_0"
            "1": "creality_cr10_dual_extruder_1"

* Now you need to create those two extruder files:

* Copy extruders/creality_cr10_extruder_0.def.json -> extruders/creality_cr10_dual_extruder_0.def.json and extruders/creality_cr10_dual_extruder_1.def.json

* In extruders/creality_cr10_dual_extruder_0.def.json and extruders/creality_cr10_dual_extruder_1.def.json, change the id, and under metadata change the machine and position (position should be "1" for the second extruder).

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OMG thanks for that!!!!!!


This is something I've been fighting for a long, long time, and more or less given up on. I'll try it out. Even the firmware can't seem to keep "is the second extruder #1 or #2" straight, but I think I can manage.

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FINALLY trying this.



In the extruder file:

I think 

"extruder_nr": { "default_value": 0 }, 

should be 1 as well, as in:


    "overrides": {
        "extruder_nr": { "default_value": 1 },
        "machine_nozzle_size": { "default_value": 0.4 },
        "material_diameter": { "default_value": 1.75 }



The other issue:

            "0": "creality_cr10_dual_extruder_0",
            "1": "creality_cr10_dual_extruder_1"

You need a comma between the two entries in that ... list? array? Thing with bendy brackets. ?


Thanks again, going to try this out.

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