Jump to content
Ultimaker Community of 3D Printing Experts

Extrusion stopping early into print


Plushberry
 Share

Recommended Posts

Posted · Extrusion stopping early into print

Hello everyone, I have been printing with this printer with relatively high success for all of my previous prints. i switched to PETG, and didnt have an issue printing with that either. As soon as I went back to PLA, i began running into trouble. I am trying to print pieces for an architectural model for school but so far the printer has not been able to make it past the first layer successfully. I have not tried the file in a few days, since I am trying to fix the printer. Today I did many minicaltests to see if the printer was working better (I originally thought the issue may have been high tension on the drive gear) and I got inconsistent results. For some reason the printer seemed to be working fine when I was staring at it as it printed but when I let it run by itself, it is unable to properly finish the last few layers of the calibration. I have performed the atomic pull a few times and even replaced the nozzle, so I do not think it has anything to do with the previous material, though I may of course be very wrong there. 

image000000_01.jpg

image000000.jpg

  • Link to post
    Share on other sites

    Posted · Extrusion stopping early into print

    What material did you use for the atomic pull? 

    You may also want to check the coupler as this is a common problem on Ultimaker machines. Printing PETG at higher temperatures also leads to higher wear of this item. 

  • Link to post
    Share on other sites

    Posted · Extrusion stopping early into print

    You need to do atomic pulls with the higher temp material, or, an even higher temp material. PLA is not a good thing to do a cold pull with PETG. Go back with PETG or a higher temp material to really clean it out properly. It is not just the nozzle, but maybe some stuff backed up a bit higher in the core.

  • Link to post
    Share on other sites

    Posted · Extrusion stopping early into print
    1 minute ago, kmanstudios said:

    You need to do atomic pulls with the higher temp material,

    Thats some good advice. Nylon works quite well and there are also some cleaning filaments on the market. 

    2 minutes ago, kmanstudios said:

    It is not just the nozzle, but maybe some stuff backed up a bit higher in the core.

    Ultimaker 2 machines don't use print cores. 

    Next up after the nozzle is the coupler. Upper left is a new coupler and bottom right a worn out coupler, which can lead to underextrusion. 

    Img3564_1.jpg

    Picture: Ultimaker.com

     

    Have a look at this guide to check your coupler: https://ultimaker.com/en/resources/22188-how-to-replace-the-tfm-coupler

     

  • Link to post
    Share on other sites

    Posted · Extrusion stopping early into print

    Okay. I will try a couple pulls with PETG and send pictures of the results. The coupler seems to be fine, still fairly white in color. 

    IMG_20180318_185929566.jpg

    IMG_20180318_185851970.jpg

  • Link to post
    Share on other sites

    Posted · Extrusion stopping early into print
    3 minutes ago, Plushberry said:

    The coupler seems to be fine, still fairly white in color. 

    You need to disassemble the print head to check the bottom side of the coupler. The top doesn't wear out. 

  • Link to post
    Share on other sites

    Posted · Extrusion stopping early into print
    1 minute ago, cjs said:

    You need to disassemble the print head to check the bottom side of the coupler. The top doesn't wear out. 

    Will do after the pulls. Thanks for the help

  • Link to post
    Share on other sites

    Posted · Extrusion stopping early into print

    theres are the results from my pulls from left to right being first to last. For some reason the second time the fillament seemed to have broken inside thoug I coudnt see any bits of fillament in the coupler. the third pull I pulled while the temp was at about 105 which is why it came out elongated. 

    IMG_20180318_192026173.jpg

  • Link to post
    Share on other sites

    Posted (edited) · Extrusion stopping early into print

    here is the coupler. I think ai will need to replace it anyways because pulling it out of the hot end caused some damage to the exterior anyways. Please let me know how I should proceed. 

    IMG_20180318_200557623.jpg

    IMG_20180318_200730091.jpg

    Edited by Plushberry
  • Link to post
    Share on other sites

    Posted · Extrusion stopping early into print

    I replaced the coupler and the printer seems to be doing fine for now. I have notoced though that one of the belts has little to no tension on it. I will update in the morning when the print is finished to see if the deffinition looks good 

    IMG_20180318_214142272.jpg

  • Link to post
    Share on other sites

    Posted · Extrusion stopping early into print
    5 hours ago, cjs said:

    Ultimaker 2 machines don't use print cores. 

    Ya gots me. I was calling it core for a lack of a better vocabulary. I was referring to the area just before the nozzle. Now, looking at the pics, it would seem that would be the coupler, yes? Always out to learn something even if I do not have the machine. I have seen a lot about couplers, but this is the first time I have seen the pics.

  • Link to post
    Share on other sites

    Posted · Extrusion stopping early into print

    it seems it was indeed the coupler. I have been printing the architectural model parts and they seem to be coming out fairly well

  • Link to post
    Share on other sites

    Posted · Extrusion stopping early into print

    it seems it was indeed the coupler. I have been printing the architectural model parts and they seem to be coming out fairly well

  • Link to post
    Share on other sites

    Posted · Extrusion stopping early into print

    the pribts came out fairly well. only flaw is some slight holes in part of the walls as will be visible in the images. if there is a way to fix this please let me know. 

    IMG_20180319_070336703_LL.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
     Share

    • Our picks

      • The Ultimaker Showcase — October 14. What's new?
        Your dear friends at Ultimaker have some exciting news and insights for you!
         
        • 0 replies
      • New here? Get ahead with a free onboarding course
        Hi,
         
        Often getting started is the most difficult part of any process. A good start sets you up for success and saves you time and energy that could be spent elsewhere. That is why we have a onboarding course ready for
        Ultimaker S5 Pro Bundle, Ultimaker S5, Ultimaker S3 Ultimaker 2+ Connect.   
        They're ready for you on the Ultimaker Academy platform. All you need to do to gain access is to register your product to gain free access. 
        Ready? Register your product here in just 60 seconds.
          • Like
        • 8 replies
    ×
    ×
    • Create New...