Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  
evostatic

UM2 Extrusion problems (again ultimaker has the worst customer support ive ever dealt with)

Recommended Posts

so since ultimaker isnt responding to my emails i thought instead of paying money for a new nozzle that id try to unclog mine. so i took it all apart and help a propane torch on it until and the pla had burned away. i looked through one end and could see light through the tiny little hole in the end of the nozzle. i put it back together and what do i get? under extrusion and the little click/skip on the bowden extruder. i took of the tube and tried to manually feed it and i felt the it wasn't going through with as much ease. i might not be hot enough or the nozzle is screwed. what weird is that it will print fine for a bit but then start clicking. and when i extrude filament it doesn't just string out of the nozzle, it beads up on the tip. PLEASE HELP!

 

Share this post


Link to post
Share on other sites

How did you unload the filament? If I use the change filament procedure it results in a very fine thread inside the Bowden tube as the unload is performed at a significantly too high temperature. This thread is hardly to not visible by eye but blocks the filament flow as the clearance between Bowden tube and filament is extremely small on the UM2. So, I recommend to clean the Bowden tube as you feel some resistance when inserting filament manually.

About UM support: I don't understand how they could keep customers waiting for an answer (not for a solution) for up to week. Something is still quite wrong there. I can only guess but I think it has something to do with their ticket system. It upgrades every ticket by two levels in urgency from day to day. I think there is something like 6 different levels which means that after three days latest every ticket has the highest priority. This must be very difficult to deal with for the support people. So, I recommend to UM to switch off this urgency upgrade and let the customer choose and eventually upgrade the urgency level.

 

Share this post


Link to post
Share on other sites

How did you unload the filament? If I use the change filament procedure it results in a very fine thread inside the Bowden tube as the unload is performed at a significantly too high temperature. This thread is hardly to not visible by eye but blocks the filament flow as the clearance between Bowden tube and filament is extremely small on the UM2. So, I recommend to clean the Bowden tube as you feel some resistance when inserting filament manually.

About UM support: I don't understand how they could keep customers waiting for an answer (not for a solution) for up to week. Something is still quite wrong there. I can only guess but I think it has something to do with their ticket system. It upgrades every ticket by two levels in urgency from day to day. I think there is something like 6 different levels which means that after three days latest every ticket has the highest priority. This must be very difficult to deal with for the support people. So, I recommend to UM to switch off this urgency upgrade and let the customer choose and eventually upgrade the urgency level.

 

ok. ill give it a try. any other ideas as to why its clicking?

 

Share this post


Link to post
Share on other sites

for up to week.

 

I hear sometimes 2 weeks :(

Smart to ask here.

 

it doesn't just string out of the nozzle, it beads up on the tip

 

Major Clue!!! I think. I hope.

I had this problem a while back. Sometimes it curls and goes back and touches the nozzle but usually if you pull on the loop a little as it extrudes then the gravity of 30mm of filament should keep it straight.

But once even 100mm of filament was not enough to keep it straight - it kept touching the nozzle. Also I had underextrusion. The fix was to take a hypodermic needle (smaller than .4mm) and stick it in the hole and rub it around in a circle hard - careful not to stick it in so far it could damage the teflon piece higher up.

This fixed both issues almost immediately.

After burning to ash did you get the ash out? One method is the atomic method:

http://umforum.ultimaker.com/index.php?/topic/4118-blocked-nozzle/?p=33691

 

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
Sign in to follow this  

  • Our picks

    • Introducing Ultimaker Cura 3.6 | Beta
      Ultimaker Cura 3.6 | Beta is available. It comes with new features, bug fixes, and UX improvements. We would really like to have your feedback on it to make our stable release as good as it can be. As always, you can download the beta for free from our website, for Windows, MacOS, and Linux.
        • Like
      • 95 replies
    • Print Core CC | Red for Ruby
      Q: For some users, abrasive materials may be a new subject matter. Can you explain what it is that makes a material abrasive when you are not sure which print core to use?
      A: Materials which are hard in a solid piece (like metals, ceramics and carbon fibers) will generally also wear down the nozzle. In general one should assume...
        • Like
      • 30 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 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!