Jump to content

First layer problems with new PEI sheet


stejan

Recommended Posts

Posted · First layer problems with new PEI sheet

I have a Creality Ender 5 pro with a Micro Swiss all metal hot end and CR-touch ABL updates. I usually use the standard black creality magnetic flexible print beds which are textured and perform very well when new.

After a while they tend to lose some adhesion so i decided to try a Creality smooth flexible PEI bed has i have heard good things about PEI. 

I have levelled the bed and set the z-offset to what i am pretty sure is optimal but i am getting issues with the first layer.

I am using my normal Eryone PLA which always performs very well for me on the other build plates but not with this new sheet. Has you can see from the first image the first layer is all 'lumpy' for some reason. The second image shows the same print on layer 3 which shows that it isnt a partial clog or filament issue.

It seems to be some sort of problem with the PLA somehow reacting with the PEI bed. I am pretty sure that the offset is has good has i can get it, any lower and it tends to lump even more, and any higher and the adhesion suffers.

Any ideas or thoughts on possible causes?

 

IMG_20230203_133110322.thumb.jpg.45e2b8c42689c746c229172f752c7480.jpg IMG_20230203_134755535.thumb.jpg.66b9f157bcf0493e9bb363ebf8449a41.jpg

  • Link to post
    Share on other sites

    Posted · First layer problems with new PEI sheet

    UPDATE - Here is an image of two finished parts. The top one was printed on the textured black mat and the bottom one on the smooth PEI sheet. These parts are printed face down so the first layer is crucial.

    The bottom one is actually super smooth to the touch but those lumps have made it look very untidy to look at.

     

    IMG_20230203_144217577.thumb.jpg.2f3b0b07d026ece9a076480142310070.jpg 

  • Link to post
    Share on other sites

    Create an account or sign in to comment

    You need to be a member in order to leave a comment

    Create an account

    Sign up for a new account in our community. It's easy!

    Register a new account

    Sign in

    Already have an account? Sign in here.

    Sign In Now
    • Our picks

      • UltiMaker Cura 5.7 stable released
        Cura 5.7 is here and it brings a handy new workflow improvement when using Thingiverse and Cura together, as well as additional capabilities for Method series printers, and a powerful way of sharing print settings using new printer-agnostic project files! Read on to find out about all of these improvements and more. 
         
          • Like
        • 18 replies
      • S-Line Firmware 8.3.0 was released Nov. 20th on the "Latest" firmware branch.
        (Sorry, was out of office when this released)

        This update is for...
        All UltiMaker S series  
        New features
         
        Temperature status. During print preparation, the temperatures of the print cores and build plate will be shown on the display. This gives a better indication of the progress and remaining wait time. Save log files in paused state. It is now possible to save the printer's log files to USB if the currently active print job is paused. Previously, the Dump logs to USB option was only enabled if the printer was in idle state. Confirm print removal via Digital Factory. If the printer is connected to the Digital Factory, it is now possible to confirm the removal of a previous print job via the Digital Factory interface. This is useful in situations where the build plate is clear, but the operator forgot to select Confirm removal on the printer’s display. Visit this page for more information about this feature.
          • Like
        • 0 replies
    ×
    ×
    • Create New...