Layer Heights and Ticking?

Discussion in 'Calibration, Help, and Troubleshooting' started by EpicFail, Jan 29, 2017.

  1. EpicFail

    EpicFail Active Member

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    So, I dont have a photo for this. but hear me out because I swear this is a THING.

    So I've been getting random print quality at times. And this often noticible ticking noise from my z-axis, as though its stuck between layers.

    Looking over it.. if the z-steps per mm is 1600, or 0.000625mm per step.

    Then when doing the math, it seems like i should be able to print at .2mm perfectly right? But it seems iffy how it starts outputting filament. And I was wondering if theres a connection between this ticking in my z axis, and what feels like over compressed layers.

    Is there something that comes to mind to help diagnose this? I get some realy poor prints, and then realy good prints at seemingly random intervals.
     
  2. Spoon Unit

    Spoon Unit Well-Known Member

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    did you grease the z-screws? check the driver voltages? overtighten something somewhere?
     
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  3. EpicFail

    EpicFail Active Member

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    Yeah I was starting to put 3 in 1 oil on them to see if that would help last night. Also forcing the bed down by hand after the first few layers. Im thinking since the z is not under a constant downforce from a pair of springs, the grease I had in there may have caked up and prevented it from settling between layer prints?

    Set the voltage back when I built it, should be ok, Gonna try cleaning off as much lithium grease there is, put more 3-in1- on it, and then tram it up and down a bunch to get it worked out a bit.

    Has anyone made upgrades that use any kind of constant spring force to push the axis down into place? I remember my Taz 2 had that in a way.
     
  4. Ephemeris

    Ephemeris Well-Known Member

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    If your guide rods are reasonably straight, the linear bearings decent, and you've trammed the system, gravity is all you should need.
     
  5. EpicFail

    EpicFail Active Member

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    Cleaning up the grease and tramming it up and down a bit using oil seems to have helped clean it up. Now looking at constant texturing on the ouside. some ringing, some elephant footing..
     
  6. Spoon Unit

    Spoon Unit Well-Known Member

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    Elephant footing is purely about the height of your first layer. If you push the bed closer to the nozzle than the layer height, the foot will appear.
     
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  7. EpicFail

    EpicFail Active Member

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    Yeah I've managed to change the layer offset height. Little bit of footing but its much much better. Printed a test cube in vase mode at .05mm, complete success!
     

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