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Posted · z stage hangs

After chasing irregular horizontal lines appearing in my prints for over a week I think I finally found the cause. I accidentally watched the z stage as it was jammed at one layer and suddenly dropped leaving a layer with massive underextrusion.

Jamming was possible as I used a flexible coupling (which was unfortunately also flexible in z direction).

For the time being I remounted the original Ultimaker coupling which makes sure there are no such lines. However, the z wobble increase a bit... :sad:

As other people had similar issues with their Ultimaker Originals, I would like for advice how to avoid jamming of the z stage. Are there e.g. any known issues with the linear bearings?

 

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    Posted · z stage hangs

    Aha,

    similar opinions I see.

    Z stage hangs, what I thought....

    See the roll of Lead, between the lexan and the wooden logo plate.

    Not a scientific solution but it works :cool: For a couple of months already..

    WP 000733

     

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