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Ultimaker Community of 3D Printing Experts


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  1. Hello gr5 and thank you a lot for your answer! You were right, the problem was coming from the power supply, but not at the printer level, it was just the hub that was very not well inserted in the old plug... The other devices on it were working well, but probably that the printer didn't like it! After noticing it I could print four two hours long parts. Thank you also for all the other advice and tips to maintain it well, it improves my understanding of how all this works! My last issue is now the connection to Cura. Do you know if it can come from the ubuntu OS?
  2. Hello! I'm facing a new issue with my UMO+ after years of good jobs: it stops randomly and I can't find why. The prints start normally and before the end of the job almost everytime the printhead suddenly stops moving, the screen becomes blue with nothing displayed for a few seconds, before going back to normal as if I just turned it on, and the build plate can go down. I can get very small prints to the end but when I relaunch it the second time this problem occurs. I've no idea of where it can come from. I wanted to update the firmware but I can't connect it to Cura v
  3. Thank you for these explanations! That's good to know even if I don't intend to use my printer as a lift...
  4. Actually the bearing seems to be fine and to rotate smoothly. But the preset of the spring was really slight compared to what's recommended. I may have loosen the screw because of the plastic dust I was seeing when removing the wheel. This too slight pressure on the filament may have worn it without making it advance. Now I tightened the spring screw my material supply seems to be back to normal! Thanks a lot for your precious advices, as always!
  5. Thank you guys for these advices! I will check these points. PLA dust was on the knurled bolt when removed it, so it could have come inside the bearing in the long run.
  6. Hi there! I am suddenly experiencing under-extrusion with my UMO+ and I noticed that my feeder does not drive consistently the filament. When I rotate the wheel manually, I can feel that the resistance is not regular throughout the rotation, and the filament moves on and stops several times in one rotation. I tried to modify the pressure of the little wheel on the filament but it does not solve the issue. Does someone had the same issue or know where this could come from?
  7. Thanks a lot for all these feedbacks! Always much appreciated. To summarize I'll keep in mind that UMO+ can reach similar quality levels than the upper models provided that some adjustments are made. So for the quite inexperienced user I am, UM2+ may be a better choice. So I can rely on its technology without much worries. That said, I don't regret at all to have started with an UMO+. I was completely unfamiliar with FDM printing and this enabled me to understand a lot about it, and more importantly, it made me want to use it even more!
  8. Thank you for these very helpful explanations Tommyph1208! About the multiple nozzles of the UM2+, do you think that the same results could be obtained with an UMO+ just by changing the nozzle?
  9. Thanks a lot for this reply, that's very good to know ! I have to say I'm quite surprised to read this. I expected that the fact that it is manually assembled by the user could have an impact on the accuracy, but it seems like it's not the case? I also thought that the UM2+, with its several nozzles, was somehow designed for efficiency. What's the purpose of this otherwise? Thanks again!
  10. Hi there! I have to warn you this may be a newbie question! Is there a printing quality difference between the printers of the Ultimaker range? The resolution is the quite same for all the models but are the latest printers more accurate and reliable? This because I'm considering to upgrade my current UMO+ with an UM2+ or an UM3. I'm very pleased with the machine, I think it does great work, but I need to print parts quite quickly and I'm experiencing some aesthetic defects like irregular stripes when I decrease the quality (I asume it is normal as it is called "draft" or "coarse"). With th
  11. I still struggle to assign one extruder to the shell and the other one to the infill. For two different parts on the plate it is very easy, but for different areas of one same part I can't figure out how to do this. Is it necessay to divide the model before or something like that?
  12. Ok. I think I had a misconception of the situation before your explanations. I assumed that the extruded strings could be considered as round, I mean with a circular section. And so that to have thinner strings on the shell, it was necessay to have more layers locally, like on this scheme. Is my understanding better now?
  13. Thanks for your comment Ahoeben! This is very good to know! I added an UM3 on Cura and I tried to assign one extruder to the infill and the other one to the shell just to see the impact it has on duration, but I can't figure out how to set this up. I don't find eather the "Infill layer thickness" setting you talk about. I only have "Infill density". But according to the link posted by Kmanstudios, it should be possible It says: "A print core with a 0.8 mm nozzle has been assigned to print infill and inner walls here, while a 0.4 mm nozzle has been assigned to print all other features wi
  14. Thanks a lot for sharing this! Do you know if this is possible with every printer of the Ultimaker range, provided that some adaptations are made? Or is it only a feature available on the last model? Thanks again!
  15. Hi community! I may have a challenging question for you experts: I'm wondering if it is possible to set up different layer heights for the infill and the shell? This because I would like to reduce the printing duration of solid parts (100% infill) while keeping good extrenal surfaces quality. It seems possible to me to have for instance two layers on the shell for each internal layer (with twice thinner strings at the shell level), at least theoretically. Maybe using two nozzles with two different diameters? What I don't know is does the slicing enables this kind of setting or not? I couldn
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