Jump to content
Ultimaker Community of 3D Printing Experts
0235

print nozzel keeps jamming

Recommended Posts

Hello All,

i have an ultimaker original V1

I keep running into an issue with my printer where it will get part way through a print, and then jam up. i have attached a picture of waht happens to the fillament inside the nozzel, and i have to keep removing the bowden tube from the heated nozzel every single time it jams.

im on my 5th attempt today of a piece that should be simple. is there any advice on how to fix this?

UlLAjs.jpg

IcM5Bu.jpg

Share this post


Link to post
Share on other sites

As @DidierKlein says, get yourself a new teflon coupler if you haven't changed it in a while. Try atomic pulls first to make sure the nozzle and brass tube are clear.

In my experience, if the coupler is worn (e.g., no longer seals well against the PEEK isolator, you will get filament jams after printing a while as the heat transfers upward toward the coupler and the filament softens--especially if you are doing a lot of retractions.

Share this post


Link to post
Share on other sites

I replaced the entire nozzel asembly just over a year ago, and have barely run 4 spools of colourfabb material through it.

when i first changed it everything seemed ok, printed only a few things (im a very light user) but in the recent 6 months it constantly jams and it happens inthe same way, somewho the plastic finds a way between the bottom of the bowden tube, and inside the hot end isolator coupler.

But i will have a closer look at the coupler, and maybe even the brown PEEK part.

the bowden tube is also quite worn out near the nozzel end (do to constantly being removed). i have heard that bowden tube accuracy is vital for good prints, do you think this could be another reason for having issues?

Share this post


Link to post
Share on other sites

I had the same with my Ultimaker original, also not so very long after I changed the teflon part and the nozzle. I noticed that underextrusion only happened at startup of the first print. When I aborted, and started the print the second time, it printed fine.

I never got around to solving it, because I installed an UM2+ upgrade in my UM original. But I think there is a ridge somewhere where the cooled down PLA gets stuck.

Share this post


Link to post
Share on other sites

I replaced the entire nozzel asembly just over a year ago, and have  barely run 4 spools of colourfabb material through it.

when i first changed it everything seemed ok, printed only a few things (im a very light user) but in the recent 6 months it constantly jams and it happens inthe same way, somewho the plastic finds a way between the bottom of the bowden tube, and inside the hot end isolator coupler.

But i will have a closer look at the coupler, and maybe even the brown PEEK part.

the bowden tube is also quite worn out near the nozzel end (do to constantly being removed). i have heard that bowden tube accuracy is vital for good prints, do you think this could be another reason for having issues?

You can try trimming off a bit of the end of the bowden tube to make it square against the teflon coupler again. You will need a very clean cut with an X-acto knife or razor blade.

Share this post


Link to post
Share on other sites

Turns out a screw in the top was completely loose. this cause the Black Y shaped assembly to be able to lift, causing a gap between the bowden tube and the teflon coupler, and then soft fillament would flow into that gap.

so strange how such a small thing can cuase so many problems.

dissasembled the whole top to get that screw back on, and just printed off a very intricate piece (which i have printed many many times) and its probably the best quality one i have ever done!

GnxoFg.jpg

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

  • Our picks

    • Architect Design Contest | People
      The goal of this contest is to design a set of people figurines that could be used in such a project to make an area, office or mall seem populated. 
      Think of different types of people in different environments, like walking people, people standing still, working people, and both men and women.
       
      • 31 replies
    • Taking Advantage of DfAM
      This is a statement that’s often made about AM/3DP. I'll focus on the way DfAM can take advantage of some of the unique capabilities that AM and 3DP have to offer. I personally think that the use of AM/3DP for light-weighting is one of it’s most exciting possibilities and one that could play a key part in the sustainability of design and manufacturing in the future.
        • Like
      • 3 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!