Jump to content

Looking for the best way to remove PLA residues from the print head?


mnis

Recommended Posts

Posted · Looking for the best way to remove PLA residues from the print head?

Hello people

After many hours of printing time, everywhere black and gluey PLA residues form at the hot end of my UM2.

Unfortunately, I have to date not show pictures because I have cleaned the print head recently.

I have always worked with very moderate temperatures of 210-190 degrees. Nevertheless arise sticky residue.

You can burn these residues and gently polish the brass afterwards. But I wish if there is a gentler method?

Maybe there are no PLA residues and it has to do with my adhesive for the first layers something, I do not know exactly.

Markus

  • Link to post
    Share on other sites

    Posted · Looking for the best way to remove PLA residues from the print head?

    To clean the outside, I simply wait while the head heats up in preparation for a new print. When it just starts to be a bit hot, the PLA leftovers go off easily being picked by a pair of tweezers.

     

  • Link to post
    Share on other sites

    Posted · Looking for the best way to remove PLA residues from the print head?

    Yes, that aids in the removal of larger residues.

    But slowly to my print-head around is a tar-like covering. It probably has no effect on the correct function, but it just looks disgusting. And difficult disassembly of the small two-piece hot-end.

    For ABS, there are acetone, I think, but there is something similar for PLA?

    Markus

  • Link to post
    Share on other sites

    Posted · Looking for the best way to remove PLA residues from the print head?

    THF works similarly for PLA ans Acetone does on ABS. But I'm not sure it's actually PLA - as you say, it may well be glue. What glue are you using, and how are you applying it? It really shouldn't be getting anywhere near the sides of the nozzle.

     

  • Link to post
    Share on other sites

    Posted · Looking for the best way to remove PLA residues from the print head?

    There is a special desk cleaner that leaves no visible residue on the glass and on the object surface, which is why I love it.

    It is well suited for single objects and allows bed temperatures down to 40 degrees, deeper I have not tested yet. So I get distortion-free surfaces and especially in the first 100 layers (0.1mm) no indentations. The stuff evaporates very slowly, so is suitable only if all of the first layer will be printed immediately.

    It is very well possible that also are the components of the cleaner Harmful for the human organism, and also interact with the PLA. Have good ventilation is absolutely essential.

    It's hard to find alternatives that have similar good properties.

  • Link to post
    Share on other sites

    Posted · Looking for the best way to remove PLA residues from the print head?

    my head (nozzle) is very dirty as well after printing with pla flex.What is the best way to clen it? there're no pieces that cab be easily tsken with pinsets.It is more like a sticky layer over the surface.

  • Link to post
    Share on other sites

    Posted · Looking for the best way to remove PLA residues from the print head?

    This is what I mean

     

    IMG 0127

     

  • Link to post
    Share on other sites

    Posted · Looking for the best way to remove PLA residues from the print head?

    can't you just rub it off with a piece of paper/cotton towel? when it's hot of course..... be carefull with your fingers ... it works for me when cleaning PLA ..

    edit: and for the pieces on the metal fan duct I would try to scrape it off with a knife ..

     

  • Link to post
    Share on other sites

    Posted · Looking for the best way to remove PLA residues from the print head?

    hey the top of my nozzle well the part that heats up the nozzle has plastic coming out of the top and constantly ruins my prints... what should i do ?? thanks

     

  • Link to post
    Share on other sites

    Posted · Looking for the best way to remove PLA residues from the print head?

    hey the top of my nozzle well the part that heats up the nozzle has plastic coming out of the top and constantly ruins my prints... what should i do ?? thanks

     

    Sounds like you should disassemble the hot end and re-tighten the connection between the brass pipe and the heater block. The nozzle itself seems tight enough. Try to carefully turn the PEEK part open while holding the heater block with a wrench or something. If they separate, clean the thread from filament and screw the heaterblock and brass/PEEK part back together, firmly but carefully. Hopefully, this will prevent the pressure inside the print head being released anywhere else but through the nozzle.

    For quickly cleaning my nozzle from PLA, i heat it up to 170°-180°C., then grab the nozzle with a piece of leather (the raw side out) between my fingers and twist downwards a few times. Works quite well.

     

  • Link to post
    Share on other sites

    Posted · Looking for the best way to remove PLA residues from the print head?
    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
        • 7 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...