Jump to content
Ultimaker Community of 3D Printing Experts
Plushberry

Extrusion stopping early into print

Recommended Posts

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

Share this post


Link to post
Share on other sites

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. 

Share this post


Link to post
Share on other sites

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.

Share this post


Link to post
Share on other sites
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

 

Share this post


Link to post
Share on other sites

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

Share this post


Link to post
Share on other sites
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.

Share this post


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

Announcements

  • Our picks

    • Architect Design Contest | Vehicles.
      We're open for entries! - Design and submit your 3D designs of architectural entourage - vehicles - for a chance to win a large filament pack. Presenting an idea, an architectural design or something as big as an urban project isn't easy. A scaled model can really help to get your idea across.
        • Like
      • 24 replies
    • What The DfAM?
      I'm Steve Cox, an experienced engineer familiar with 3D printing. I wanted to share some DfAM guidelines with this community to help and make stronger parts.
      I'm also an Autodesk Certified Instructor for Fusion 360, so many of the images in ...
        • Thanks
        • Like
      • 23 replies
×

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!