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  1. I've seen it on other prints too, yes. The last couple of weeks I'm printing scaled versions of architectural models and I've seen it happen on almost every model. So I think it happens on every flat model like these...
  2. For the record: The company where I bought the S5 from also tried this print on one of their own S5 systems and they too saw the same issue. This is a picture they sent me and as you can see, the problem is clearly visible there too.
  3. Hi, Thanks for your input! There is no grinding on the filament over here. I already checked the feeders and there are no signs of damage or anything. I'm also having this issue on both feeders which should rule out one defective feeder. This, combined with the fact that other S5 owners seem to be having the same issue with my print, doesn't make me think I have a faulty/broken hardware.
  4. @DidierKlein I've tried changing many settings after seeing the issue with the default Cura (Cura 4.3.0) profile. Every setting I tried did not fix the issue so I'm back at the default Cura profile now. I'm printing with PLA in a 0.4AA core and 0.15mm layer height, default cura profile. I also tried Cura 4.4beta, no difference. On one particular print I tried increasing the print temperature (using the fine tune menu, while printing) when I saw the problem. I increased it to 15°C (by 5°C increments) before I saw some improvement but after a couple minutes the same problem appeared again so I think it was just a coincidence. I also tried printing one object with a 10°C higher temperature but unfortunately it didn't help. I also tried decreasing the top/bottom surface speed, yet the same issue appeared. I tried many other settings too, and because nothing seemed to help I was thinking it must be a hardware issue. That's why I contacted my reseller and asked him to print it on one of their S5's and see what happens. The next day he told me that he saw the exact same issue on his test print in layer 2 or 3 already. So he stopped the print and he's now investigating / awaiting response from Ultimaker. But it's taking quite some time and I'm stuck being unable to successfully print a some models right now. It's printing 7 top/bottom layers and I've seen prints starting successfully printing all 7 bottom layers, infill and 4 or 5 layers of the top and then suddenly, in layer 6 or 7 starts to underextrude. And the weirdest thing is: when it continues there are no other signs of underextrusion anywhere else in the print. It's *always* in the bottom or top solid layers. Which are offcourse the most dense layers in my prints. The guy on facebook also tried on his S5. The model is too big to test on a UM3/S3. I'm considering changing the top/bottom flow to 125% and test again and/or change the top/bottom line width as suggested but the printer is now busy for the next 2 days so I can't test right now. But isn't changing the flow rate just a workaround instead of a fix for the actual problem? Ps: in case anyone is interested to try. I can provide you with the 3MF file so you can do a test print on your S5 too.
  5. Yes, i tried with a new printcore and cleaned the feeders. I have the issue with both printcore slots so it’s not a feeder isssue I think... I recently even asked my reseller to look into this. He tried to print it too and saw the same issue in the early bottom layers already. But no solution so far, he’s still looking into this. Someone else on facebook printed this too and also saw the issue. He thinks it’s normal and said things were better with a 125% flow but I have not tried a print with 125% flow myself yet because it sounds like a workaround instead of a fix of the actual problem. My reseller said it will take a while to find this because he has others things to do... but I’m stuck now because I can’t get these bigger prints finished with a nice closed layer.
  6. Isn’t there anyone from Ultimaker with some advice?
  7. Ps: my distributor is also looking into this now and noticed the problem too. He forwarded this to Ultimaker already while looking into it at the same time. He’s probably going to try downgrading an s5 and test if it’s firmware related. But, it’ll take a while he said...
  8. You can not downgrade over usb and they do not provide the older firmware files for downgrading with an sd card because there is risk of electrical shock when opening the bottom plate of the s5. The power supply unit is open once you remove the bottom plate and ultimaker appearantly thinks we’re stupid enough to touch it.... So, we can not downgrade the s5 ourselves, like we can with the UM3. Ultimaker decided it should only be done by qualified people and by not providing old firmware files we can’t even try...
  9. downgrading can only be done by the reseller and no old firmware files are available for the s5...
  10. We're not the only ones it seems. I found at least 3 other people who are having the same problem (on their S5) but since not many people are talking about it on this forum I'm not sure what to think of it. I think it's firmware (or cura) related but then I wonder why there aren't many people complaining...
  11. New PCB fixed the active leveling issue. Or at least: I have not seen the problem anymore since I installed the new PCB... Yet, the printer is still printing too far from the bed at the back of the buildplate. This is very annoying for bigger prints and I would love to hear what can be done about it ...
  12. I just noticed that the S5 and UM3E do run exactly the same firmware version while the S3 has a newer one. I wonder why only the S3 has received a more recent update.... Besides this fact I have seen underextrusion issues on my UM3E too but I haven't used it a lot and only printed small parts with it where I didn't care about the surface quality... But I do think you might be right there's something odd with this firmware. I've just checked a print done with my UM3E and the underextrusion issue looks similar to the one I'm having on my S5. But on my S5 I'm printing bigger models with bigger top/bottom layers and it's more visible because of that. I wonder if anyone else if having the same issue?
  13. Does it look similar to my problem? ( )
  14. Besides the above problem I do wonder if it’s normal to see horizontal banding like seen on the picture below. If this is normal, then it’s okay but if you think this is an issue it might be related?
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