Jump to content

Initial Layer Problems - Weird


rca3g7

Recommended Posts

Posted · Initial Layer Problems - Weird

I am having trouble figuring out why my first layer is having issues when the rest of my print is near flawless. My bed is level and I am using ABS plastic (Sunsu brand), build plate temp 110 C, Extruder temp 235 C, Ultimaker Cura V3.2.1 (also happens on V3.0), Anet A8 printer. For some reason, which I hope someone can answer, the first layer (brim, raft, or otherwise) when printing, will force the extruder to travel to the edge of the build plate (heated bed) in either the X-axis direction or the Y-axis direction. Is this a slicer issue, temperature issue, or is there someway to prevent this that anyone knows of?  When this occurs, the extruder will retract material and sometimes string along a little bit of excess towards the edge of the build plate. This results in an an overlap of otherwise unnecessary material being printed over if the nozzle catches the excess, draggs it back to the printed brim or raft area, and prints over it. Also, this can result in blobbs. Can anyone tell me how to prevent the printer from traveling to the edge of the build plate on the first exterior lines of the brim or raft being printed (first layer) and anything else they might notice from the attached photo please and thank you.

print_problem.jpg

  • Link to post
    Share on other sites

    Posted · Initial Layer Problems - Weird

    ABS is very hard to print compared to PLA.  I strongly recommend you print with PLA.  Although it's possible.  ABS was popular when it was the only choice.  Now there are about 50 materials that are easier to print and have better properties.  LIke PLA, nGen, PET.

     

    The first really obvious problem is that the filament isn't always sticking to the blue tape.  The center circle is a perfect example.  That's most likely because your nozzle is too far from the blue tape.  You need to squish that first layer more to get it to stick.

     

    Also, many new people don't know that you have to wash the blue tape with isopropyl alcohol to get the wax off.  It's very easy - just put some on a paper tissue and wipe.  It only takes a few seconds.

     

    I'm not sure what you mean about going to the edge of the build plate.  This sounds like you have errors in the gcodes.  Does it happen at the initial nozzle purge only or throughout the print?  If throughout the print then you have communication issues getting the gcodes into the Arduino without them getting corrupted.  Typically a single digit of an X or Y or E position gets converted to a random character and so the head makes these long movements to the edge of the bed.  Fixes include things like getting rid of electromagnetic noise from getting into wires, printing from SD card instead of USB, using a better USB cable, using a USB splitter/amplifier, using a different computer.

  • 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

      • Introducing Universal Cura Projects in the UltiMaker Cura 5.7 beta
        Strap in for the first Cura release of 2024! This 5.7 beta release brings new material profiles as well as cloud printing for Method series printers, and introduces a powerful new way of sharing print settings using printer-agnostic project files! Also, if you want to download the cute dinosaur card holder featured below, it was specially designed for this release and can be found on Thingiverse! 
          • Like
        • 10 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...