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

UM2 firmware v15 under extrusion issue ?

Recommended Posts

Hi there,

 

I have been doing good quality prints on my Ultimaker 2 from the beginning, (I have it since about four months).

But since a while I started to have under extrusion on most of my print and that was append with any filaments I have (all my filaments are from from ultimaker)

Also I was using the same settings of before, when my print was good.

 

I tried everything I can to fix it, changing the temperature of the nozzle, the bed and many settings.

I made a lot of atomic method to clean the nozzle, I dismounted the nozzle to checked the teflon.

 

I also tried the alternative feeder from Robert and printed a bowden hook to try to improve the flow.

https://www.youmagine.com/designs/yet-another-ultimaker-2-feeder

https://www.youmagine.com/designs/bowden-hook

 

In the same idea I removed the spool and unwound the filament to reduce the tension, after I read that here :

http://ultimaker2prints.blogspot.ch/2014/11/dont-over-tighten-material-feeder.html

 

All of theses things wasn’t really a success and the under extrusion was stil there !

I was wondering what can be changed on my printer, and after one week of testing I remember I did a firmware update (15.02.1)

 

Then I Downgraded to the firmware version 14.12.1 and magical! Since I did the downgrade I did not have anymore obvious under extrusion.

Is someone know or/and have the same issue ?

 

Cheers,

Boris.

 

 

Share this post


Link to post
Share on other sites

For the 99% flow bug, I reported that one five months ago but apparently it has not been fixed yet.

http://umforum.ultimaker.com/index.php?/topic/7764-underextrusion-when-flow-is-set-below-100/?p=72702

https://github.com/Ultimaker/Ultimaker2Marlin/issues/42

I did another test to check if it still is there, and yes it is:

2015 03 15 5400

I believe this bug can potentially cause a lot of unnecessary support-tickets, so it would be good if Ultimaker would fix it at some point.

Regarding under extrusion and the V15 of the firmware, this in an interesting one.

Lately, I also observed slight underextrusion which appears be a software issue rather than anything mechanical.

I will do some more printing and roll back to an older version to test this on my machine too.

 

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  

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
      • 12 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
      • 17 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!