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  1. Its happened to my UM3 as well. High enclosure temperatures definitely contribute to the problem. We were printing PC and it gets extra hot just due to the high build plate and nozzle temps. I didn't replace the sliding blocks but I did diagnose the print head bearings as going bad. Since replacing those a few months ago I have not had them pop out again.
  2. It happened to me, seemed to be related to bad bearings in the print head. I replaced those and haven't had any more issues.
  3. SOLVED! Its the screw for the S5 front door hinges.
  4. Unboxed our new S5 yesterday and a found a screw loose inside the box. It just looks to be a regular M3 x 16 screw and the head profile doesn't seem to match anything that I can see. Would anyone know where this belongs and is it something to be concerned about?
  5. For what its worth I was able to print the Predator Pliers first try on my UM3 with 0.4 nozzle.
  6. One PC is all you need, you'll just add all the printers into Cura and choose which one you want to use for each particular job.
  7. Just thought I'd chime in and say this happened to me too!
  8. Even at half the speed a 0.8AA nozzle can finish these particular parts 3x as fast. It would definitely be worth it if I can get the quality right, I can only fit 6 of these on the build plate at a time.
  9. Thanks for the replies. Unfortunately priorities have already shifted with me so I need to back to 0.4AA and won't be able to troubleshoot for another week or so. 😞 I did notice some things though. The stock profile for 0.4AA Nylon is 255C, while for 0.8AA it is only 245C which seems against what Carla is saying. I think I may have found the real problem though, on closer look I can see that the nozzle is way too high off the plate. I realize now that I swapped cores without doing any kind of calibration or leveling offset for the 2nd nozzle so...
  10. UM3. Cura 4.6.1 UM Nylon We print all the time with nylon with the 0.4AA core and it works great. To try and save time on some simple flat pieces I switched to the 0.8AA core which we've never really used. Using the stock profile it came out quite ridiculously bad, although the preview in Cura looked good. Is there something special I should be doing to try and improve this? I've attached a photo of the 0.4 vs 0.8 parts for reference.
  11. I was wondering if anyone has any updates on this, its really frustrating. I was advised by my reseller (who also confirmed the issue on their end) to just use Cura 3.4, but I have to say I'm not very satisfied with that answer. I was going to post on Github but I think someone else already has and its been deferred by the Ultimaker team? https://github.com/Ultimaker/Cura/issues/7840
  12. Not being able to override this message is especially frustrating now that so much work is done remotely. For example the skeleton crew at my office did not remember to hit the button before they left so now I'm unable to start any of the big weekend prints.
  13. I use my printer through a wired network connection so disabling the plugin is not very desirable to me. Cura 4.5.0 does seem to run much faster for me, but still not as good as 3.4.1
  14. Looking for help with this in Cura 4.5 (although it doesn't seem to work in any version) This model has a small cutout in the very bottom that is about 0.75mm tall. It needs support as it droops too much when printing. Is there some kind of setting I'm using wrong or a way to force this? I tried playing around with the Custom Support plugin but that also gave me weird results like essentially building a raft under the entire model.
  15. @Smithy It seems like this may have been the problem. I did pull a small out of debris out of the fan (although it was very minimal) but the print succeeded on the next try. Thanks for the suggestion.
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