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Unresolved Bad Z Banding

Discussion in 'Troubleshooting' started by MIchael Billingsley, Aug 27, 2016.

  1. MIchael Billingsley

    MIchael Billingsley New Member

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    I'm having troubles with ribbing from the bottom to the top of my prints. Anyone have any solutions?

    Rocket Layers.jpg
     
    #1 MIchael Billingsley, Aug 27, 2016
  2. WheresWaldo

    WheresWaldo Volunteer ( ͠° ͟ʖ ͡°)
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    1 double check all belt tensions and
    2 slow down you printing

    There will be a dozen more suggestions coming from other people.
     
    #2 WheresWaldo, Aug 27, 2016
  3. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Exactly what printer?

    If you have an R1 or a Beta (not an R1+) then the leadscrew upgrade is the only certain solution.
     
    #3 mark tomlinson, Aug 27, 2016
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  4. danzca6

    danzca6 Well-Known Member

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    I thought that as well Mark, but then saw in his picture that he doesn't have any couplers. So I assumed he had the R1+ or at least the leadscrew upgrade. With that...it is sad to see banding still. I wonder if the leadscrews are bent like the first batches were from Robo.
     
    #4 danzca6, Aug 28, 2016
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  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    (good eye)

    That is possible, but they would need to be a long way off to affect it since the smooth rods should hold it firm and correct for X/Y movement. It seems too regular of a pattern to be over extrusion. Something else is off. I would calibrate the Z steppers. One of them may be out of kilter. The R1+ uses two different ones... If one gets out of tune you will get less (or more) turns on one side
     
    #5 mark tomlinson, Aug 28, 2016
  6. danzca6

    danzca6 Well-Known Member

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    I was thinking the other day why Robo went this way. I think it might be more problematic because of the driver setting being different. I wonder if that is why here more ABL issues with the R1+. Not sold on their move to using two drivers for Z yet.
     
    #6 danzca6, Aug 28, 2016
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  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I never sorted out the why since almost every other FDM printer uses a single Z driver (for simplicity) and those that use the RAMPS use that extra channel for a second extruder.

    I have no idea why they went that way.
     
    #7 mark tomlinson, Aug 28, 2016

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