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  1. #1

    Why my printer leaves small lumps/bits on surface

    I have printed a bed levelling square to demonstrate the things which I want to explain. The surface of my parts is always having small bits/lumps of materials?



    Is it problem with material flow rate? My ultimaker 2 plus asks value for material flow rate in %, what should be the value?



    P.S.- I have tried levelling the build plate but it's not the solution to my problem I believe. Thanks

  2. #2
    Super Moderator
    Join Date
    May 2020
    Posts
    689
    A picture of the bed leveling square would help to see the surface. The 'Z' offset might need adjusting in the slicer settings.
    I don't use Cura, however a guess of 100% is a figure to start from and adjust in small increments.

    Orca, Bambu and Prusa slicers use the figure of '1' as a starting point, a flow rate setting might be between '0.95' and '1'

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