More Ninjaflex on the 5th gen

 Black Ninjaflex now finally stable

 Various layer heights - main issue was feed friction actually. Now at 210C overhangs and bridging works as well as retraction. The smart extruder is pretty ok for this material i think...

 This is a spool hanger and bearings i printed from thingiverse. Did wonders for stability. It seems NF and Woodfill has too much friction for the stock feed tube and drawer setup.

Setup that is current favorite :

{
    "comment" : [
     "This is a custom profile for MakerBot Slicer. Editing it will modify your",
      "slice settings. For documentation on MakerBot Slicer parameters, see here:",
      "http://www.makerbot.com/support/makerware/documentation/slicer"
    ],
    "version":"3.0.0",

    "layerHeightMinimum": 0.12,
    "layerHeightMaximum": 0.27,

    "layerHeight": 0.20,
    "layerWidthMaximum": 0.4,
    "layerWidthMinimum": 0.4,
    "layerWidthRatio": 1.481481,
    "bedZOffset": 0,
    "startX": -110.4,
    "startY": -74.0,
    "startZ": 0,
    "defaultExtruder": 0,

    "rapidMoveFeedRateXY": 150,
    "rapidMoveFeedRateZ": 23,

    "minLayerDuration": 5.0,
    "minSpeedMultiplier": 0.3,

    "doDynamicSpeed": false,
    "dynamicSpeedCurvatureThreshold": 15,
    "dynamicSpeedDetectionWindow": 3.0,
    "dynamicSpeedSlowdownRatio": 0.3,
    "doDynamicSpeedGradually": true,
    "dynamicSpeedTransitionWindow": 6.0,
    "dynamicSpeedTransitionShape": 0.4,
    "doDynamicSpeedOutermostShell" : true,
    "doDynamicSpeedInteriorShells" : false,

    "doSplitLongMoves": true,
    "splitMinimumDistance": 0.4,

    "extruderTemp0": 230,
    "extruderTemp1": 215,
    "platformTemp": 0,

    "numberOfShells": 3,
    "infillShellSpacingMultiplier": 0.7,
    "insetDistanceMultiplier": 1.0,

    "roofThickness": 1.2,
    "roofLayerCount_disabled": 4,
    "roofAnchorMargin": 0.65,
    "floorThickness": 1.2,
    "floorLayerCount_disabled": 4,

    "coarseness": 0.00001,

    "sparseInfillPattern": "hexagonal",
    "infillDensity": 0.33,
    "infillOrientationOffset": 0,
    "infillOrientationInterval": 90,
    "infillOrientationRange": 90,

    "gridSpacingMultiplier": 0.99,
    "solidFillOrientationOffset" : 0,
    "solidFillOrientationInterval": 90,
    "solidFillOrientationRange": 90,

    "doBacklashCompensation": false,
    "backlashEpsilon": 0.05,
    "backlashFeedback": 0.9,
    "backlashX": 0.0,
    "backlashY": 0.09,

    "doBridging": true,
    "bridgeAnchorMinimumLength": 0.8,
    "bridgeAnchorWidth": 0.8,
    "bridgeMaximumLength": 80.0,
    "bridgeSpacingMultiplier": 1.0,

    "doExternalSpurs": true,
    "doInternalSpurs": false,
    "maxSpurWidth": 0.5,
    "minSpurLength": 0.34,
    "minSpurWidth": 0.12,
    "spurOverlap": 0.001,

    "doRaft": false,
    "defaultRaftMaterial": 0,
    "doMixedRaft": false,
    "raftAligned": true,
    "raftBaseAngle": 0,
    "raftBaseDensity": 0.7,
    "raftBaseLayers": 1,
    "raftBaseRunGapRatio": 0.8,
    "raftBaseRunLength": 15.0,
    "raftBaseThickness": 0.3,
    "raftBaseWidth": 2.5,
    "raftInterfaceAngle": 45,
    "raftInterfaceDensity": 0.3,
    "raftInterfaceLayers": 2,
    "raftInterfaceThickness": 0.27,
    "raftInterfaceWidth": 0.4,
    "raftModelSpacing": 0.29,
    "raftOutset": 4,
    "raftSurfaceAngle": 0,
    "raftSurfaceLayers": 2,
    "raftSurfaceThickness": 0.27,
    "raftSurfaceShells": 2,
    "raftSurfaceShellSpacingMultiplier": 0.7,

    "doPurgeWall": false,
    "purgeWallModelOffset" : 2.0,
    "purgeWallSpacing" : 1.0,
    "purgeWallWidth" : 0.5,
    "purgeWallBasePatternWidth" : 8.0,
    "purgeWallBaseFilamentWidth" : 2.0,
    "purgeWallBasePatternLength" : 10.0,
    "purgeWallPatternWidth" :  2.0,
    "purgeBucketSide" :  4.0,
    "purgeWallXLength" : 30,

    "anchorWidth": 2.0,
    "anchorExtrusionAmount": 5.0,
    "anchorExtrusionSpeed": 2.0,

    "doSupport": false,
    "defaultSupportMaterial": 0,
    "doMixedSupport": false,
    "doSupportUnderBridges": false,
    "supportAligned": true,
    "supportLeakyConnections": true,
    "supportDensity": 0.2,
    "supportExtraDistance": 0.5,
    "supportAngle": 68.0,
    "supportModelSpacing": 0.4,
    "supportExcessive": false,

    "doFanCommand": false,
    "fanLayer": 1,
    "weightedFanCommand": -1,
    "doFanModulation": true,
    "fanModulationWindow": 0.1,
    "fanModulationThreshold": 0.5,

    "doPrintProgress": true,

    "startGcode": "",
    "endGcode": "",

    "commentClose": "",
    "commentOpen": ";",

    "extruderProfiles": [
        {
            "bridgesExtrusionProfile": "bridges",
            "feedDiameter": 1.75,
            "feedstockMultiplier": 0.85,
            "firstLayerExtrusionProfile": "firstlayer",
            "firstLayerRaftExtrusionProfile": "firstlayerraft",
            "infillsExtrusionProfile": "infill",
            "insetsExtrusionProfile": "insets",
            "nozzleDiameter": 0.4,
            "outlinesExtrusionProfile": "outlines",
            "raftBaseExtrusionProfile": "raftbase",
            "restartExtraDistance": 0.1,
            "retractDistance": 1.0,
            "retractRate": 10,
            "retractDistance2": 1.0,
            "retractRate2": 50,
        "restartRate": 50,
            "toolchangeRetractDistance" : 19.0,
            "toolchangeRetractRate" : 6.0,
            "toolchangeRestartDistance" : 18.5,
            "toolchangeRestartRate" : 6.0
        },
        {
            "bridgesExtrusionProfile": "bridges",
            "feedDiameter": 1.77,
            "feedstockMultiplier": 0.75,
            "firstLayerExtrusionProfile": "firstlayer",
            "firstLayerRaftExtrusionProfile": "firstlayerraft",
            "infillsExtrusionProfile": "infill",
            "insetsExtrusionProfile": "insets",
            "nozzleDiameter": 0.4,
            "outlinesExtrusionProfile": "outlines",
            "raftBaseExtrusionProfile": "raftbase",
            "restartExtraDistance": 0,
            "retractDistance": 1.0,
            "retractRate": 10,
            "retractDistance2": 1.0,
            "retractRate2": 50,
        "restartRate": 50,
            "toolchangeRetractDistance" : 19.0,
            "toolchangeRetractRate" : 6.0,
            "toolchangeRestartDistance" : 18.5,
            "toolchangeRestartRate" : 6.0
        }
    ],
    "extrusionProfiles": {
        "bridges": {
            "feedrate": 30,
            "temperature_disabled": 230.0
        },
        "firstlayer": {
            "feedrate": 5,
            "temperature_disabled": 230.0
        },
        "firstlayerraft": {
            "feedrate": 30,
            "temperature_disabled": 230.0
        },
        "infill": {
            "feedrate": 30,
            "temperature_disabled": 230.0
        },
        "insets": {
            "feedrate": 30,
            "temperature_disabled": 230.0
        },
        "outlines": {
            "feedrate": 10,
            "temperature_disabled": 230.0
        },
        "raftbase": {
            "feedrate": 10,
            "temperature_disabled": 230.0
        }
    }
}