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White substance on V wheels

Discussion in 'General Talk' started by Athul, Oct 31, 2018.

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  1. Athul

    Athul New
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    I've a 3d printer that I've recently built using V slot.

    It's been continually printing for around 30 hours, and I noticed some white film(like spider web) kind of substance in all Y axis v wheels but couldn't find anything on X axis

    My X & Y axes Universal gantry plate running on 20x40 V slot using V wheels

    For X axis gantry plate is placed vertically and for Y gantry plates are placed horizontally

    Since I could only find this in Y axis, Is V wheel + gantry plate not designed build in horizontal manner as seen in picture?
     

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  2. MaryD

    MaryD OpenBuilds Team
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    3D printers tend to create "spider webs". Could be attracted to that area by static or perhaps air flow.
     
  3. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    One thought would be that you have too much pre-load on the wheels. Where did you source your wheels from?
     
  4. Athul

    Athul New
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    I've not sourced it from Openbuilds, since I live in India. I bought it from an online store 3DPrintronics

    My gantry assembly has Universal gantry plate + Spacer block+ 6.35 mm spacer(2X)+6.35 mm eccentric(2x)

    When I was assembling, even when the eccentric nuts positioned give maximum offset, the wheels were little tight on V slot rail. It could be due to that.

    Pre-load: If I understand that correctly, In the case of V-slor + V wheels, how wheels are positioned to reduce play by adjusting eccentric, right?

    But it's not present on X and present on both Y axes
     
    #4 Athul, Nov 2, 2018
    Last edited: Nov 2, 2018
  5. GrayUK

    GrayUK Openbuilds Team Elder
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    I think more photos are called for here.
    Are you sure that is V Slot?
    If not, the sharp edge would be cutting into the plastic.
     
  6. Athul

    Athul New
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  7. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    Correct.

    I'm guessing the problem is probably a combination of the pre-load and low quality wheels. Good quality acetal wheels shouldn't be doing this. They will develop temporary flat spots with to much pre-load but I've never heard of them shredding. You might see if you can source some better quality wheels if the problem continues.
     

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