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UMS5: Underextrusion problems

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Posted · UMS5: Underextrusion problems

So Ultimaker support reached out to me and told me that they do not know what the problem is and I should pay a service 3d party technician who has the expertise to deal with that problem. I am truly out of words. I will never work with an Ultimaker product again. Do you know who would buy this peace of junk with 20kg of filament a few spare parts and a spare bed and a few printcores some new some clogged.

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    Posted · UMS5: Underextrusion problems

    Did you speak with a reseller or with an actual ultimaker employee in the Netherlands?  The ones in The Netherlands are usually quite good (and for people in USA, the support people at fbrc8.com are extremely good).


    So your problem is tricky - your feeder and nozzle both seem to be working okay. 


    I guess you need to post your project file.  In cura do "file" "save project as" and post the resulting file here.  The same exact settings as that square part where the walls were separated.

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    Posted (edited) · UMS5: Underextrusion problems

    Hi @LJustusBuhler & @gr5,


    Just back from the hospital, so not that easy to answer.

    Thanks Gunnar for the kind of word.

    I'll hope I'd not confuse anyone, but Cura Arachne is just different than the old Cura slicing engine.

    This, as it adjust the width as it want to make the model dimensions right, so in between it adjust line -so gap is avoided as much as possible. This is my basic understanding of how it's done.

    I wanted an exact adjustment to see if this worked on the surface -and so it did.

    Today, I'd looked at all the setting in the profile @LJustusBuhler used and found that the "Thin Wall" was selected.

    I'll think this setting is preventing the Arachne engine to use it's expanding mode, so this might be something?

    As I've been experimenting a lot with this engine, I found that you have to be careful when changing profile esp to avoid

    under or over extrution, but did not think much about it due to testing with Cura 4.13.1(?) with same result.









    The "thin Wall" setting is really meant to tell Cura Arachne; "Print with less width than current nozzle width". So sure; I'll know it.


    However, I've seen warnings about this to be turned off to make Cura Arachne work properly.?

    I would like to know about this "issue" from the Cura Team.


    But the "Thin Wall" setting is default in Cura and I've never checked this out, cause I did not see any problem.








    Edited by Torgeir
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    • 3 weeks later...
    Posted · UMS5: Underextrusion problems

    Hi @gr5

    I tried to get an employee on the phone multiple times and called them in the netherlands but I always got told that they do not give tech support via phone.


    Hi @Torgeir


    I will try turning off thin walls and will send the project files as well as some pictures 


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    Posted · UMS5: Underextrusion problems


    I've been having a very similar problem to you, and I just discovered the problem: the graphics card I was using in my PC!

    I don't know specifically why, but the old ASUS GTX 660 graphics card I was using in my PC was causing Cura to slice models incorrectly. Replacing the graphics card resolved the issue for me.

    I know it sounds crazy, but you can read in my thread that I tried literally everything, including sending the printer into the Ultimaker Repair Center, and nothing fixed my problem until I tried a new graphics card.

    I hope this helps!


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