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Missing layers at support transition


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Posted · Missing layers at support transition

Hi all,

 

Could some body please help, I am having a problem with Cura, when printing a part using supports, I am experiencing layer skipping at the transition between support and part.

 

Printing with a 0.2mm layer height, I have the 'Support Z Distance' set to 1 layer height, ie also 0.2mm, but during printing there is layer skipping on the printed part as if Cura was skipping the entire layer not just the space above the support.

 

Does any one have any ideas as to why this could be happening as I am at a loss.

 

Your help will be most gratefully received.

20201019_205705.jpg

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    Posted · Missing layers at support transition

    OK, I think I have found the problem after a lot of head scratching.

     

    I think I have a mechanical problem with my z-axis drive screw, it seems to be binding on the downward part of the prints z-hop, therefore the nozzle not returning its original layer height.

     

    I have proved this by simply disabling z-hopping in Cura and repeating the print, which printed clean as did a following print.

     

    I intend to widen the hole that the drive screw passes through to allow extra freedom of movement.

     

    Thanks to you all anyway.

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