Cura/resources/extruders/cartesio_extruder_3.def.json

{
    "id": "cartesio_extruder_3",
    "version": 2,
    "name": "Extruder 4",
    "inherits": "fdmextruder",
    "metadata": {
        "machine": "cartesio",
        "position": "3"
    },

    "overrides": {
        "extruder_nr": {
            "default_value": 3,
            "maximum_value": "3"
        },
        "machine_nozzle_offset_x": { "default_value": 0.0 },
        "machine_nozzle_offset_y": { "default_value": 0.0 },
        "machine_extruder_start_code": {
          "default_value": "\n;start extruder_3\n\nM117 printing...\n"
        },
        "machine_extruder_end_code": {
           "default_value": "\nM104 T3 S120\n;end extruder_3\n"
        },

        "machine_extruder_start_pos_abs": { "default_value": true },
        "machine_extruder_start_pos_x": { "default_value": 48 },
        "machine_extruder_start_pos_y": { "default_value": 309 },
        "machine_extruder_end_pos_abs": { "default_value": true },
        "machine_extruder_end_pos_x": { "default_value": 24 },
        "machine_extruder_end_pos_y": { "default_value": 309}
    }
}